Bump dnspython from 1.16.0 to 2.1.0

[dependabot-preview]

Bumps dnspython from 1.16.0 to 2.1.0.

Changelog

Sourced from dnspython's changelog.

2.1.0

• End-of-line comments are now associated with rdata when read from text. For backwards compatibility with prior versions of dnspython, they are only emitted in to_text() when requested.
• Synchronous I/O is a bit more efficient, as we now try the I/O and only use poll() or select() if the I/O would block.
• The resolver cache classes now offer basic hit and miss statistics, and the LRUCache can also provide hits for every cache key.
• The resolver has a canonical_name() method.
• There is now a registration mechanism for EDNS option types.
• The default EDNS payload size has changed from 1280 to 1232.
• The SVCB, HTTPS, and SMIMEA RR types are now supported.
• TSIG has been enhanced with TKEY and GSS-TSIG support. Thanks to Nick Hall for writing this.
• Zones now can be updated via transactions.
• A new zone subclass, dns.versioned.Zone is available which has a thread-safe transaction implementation and support for keeping many versions of a zone.
• The zone file reading code has been adapted to use transactions, and is now a public API.
• Inbound zone transfer support has been rewritten and is available as dns.query.inbound_xfr() and dns.asyncquery.inbound_xfr(). It uses the transaction mechanism, and fully supports IXFR and AXFR.

2.0.0

• Python 3.6 or newer is required.
• The license is now the ISC license.
• Rdata is now immutable. Use dns.rdata.Rdata.replace() to make a new Rdata based on an existing one.
• dns.resolver.resolve() has been added, allowing control of whether search lists are used. dns.resolver.query() is retained for backwards compatibility, but deprecated. The default for search list behavior can be set at in the resolver object with the use_search_by_default parameter. The default is False.
• DNS-over-TLS is supported with dns.query.tls().
• DNS-over-HTTPS is supported with dns.query.https(), and the resolver will use DNS-over-HTTPS for a nameserver which is an HTTPS URL.
• Basic query and resolver support for the Trio, Curio, and asyncio asynchronous I/O libraries has been added in dns.asyncquery and dns.asyncresolver. This API should be viewed as experimental as asynchronous I/O support in dnspython is still evolving.
• TSIG now defaults to using SHA-256.
• Basic type info has been added to some functions. Future releases will have comprehensive type info.
• from_text() functions now have a relativize_to parameter.
• python-cryptography is now used for DNSSEC.
• Ed25519 and Ed448 signatures are now supported.
• A helper for NSEC3 generating hashes has been added.
• SHA384 DS records are supported.
• Rdatasets and RRsets are much faster.
• dns.resolver.resolve_address() has been added, allowing easy address-to-name lookups.
• dns.reversename functions now allow an alternate origin to be specified.
• The repr form of Rdatasets and RRsets now includes the rdata.
• A number of standard resolv.conf options are now parsed.
• The nameserver and port used to get a response are now part of the resolver's Answer object.
• The NINFO record is supported.
• The dns.hash module has been removed; just use Python's native hashlib module.
• Rounding is done in the standard python 3 fashion; dnspython 1.x rounded in the python 2 style on both python 2 and 3.
• The resolver will now do negative caching if a cache has been configured.
• TSIG and OPT now have rdata types.
• The class for query messages is now QueryMessage. Class Message is now a base class, and is also used for messages for which we don't have a better class. Update messages are now class UpdateMessage, though class Update is retained for compatibility.
• Support for Windows 95, 98, and ME has been removed.

Commits

• 3933b49 remove obsolete download URL; add 3.9 classifier
• 51742fb update README for 2.1.0
• 7afdf3e Set 2.1.0 version.
• 88b19b8 Merge pull request #617 from peterthomassen/master
• 1a88653 Pass kw from dns.rdata.to_text to _hexify and _base64ify
• 1b2b550 use methods with appropriate rcode/opcode typecasting in Message.to_text()
• 5103169 Cast flags and ednsflags to int when calling dns.rcode.from_flags() and
• 14bbb9c _WireReader.read() should make flags a dns.flags.Flag [Issue #606]
• 00b5754 Add missing base classes to init.
• 834d645 Merge pull request #616 from timgates42/bugfix_typo_translation
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)
• @dependabot use these labels will set the current labels as the default for future PRs for this repo and language
• @dependabot use these reviewers will set the current reviewers as the default for future PRs for this repo and language
• @dependabot use these assignees will set the current assignees as the default for future PRs for this repo and language
• @dependabot use this milestone will set the current milestone as the default for future PRs for this repo and language
• @dependabot badge me will comment on this PR with code to add a "Dependabot enabled" badge to your readme

Additionally, you can set the following in your Dependabot dashboard:

• Update frequency (including time of day and day of week)
• Pull request limits (per update run and/or open at any time)
• Automerge options (never/patch/minor, and dev/runtime dependencies)
• Out-of-range updates (receive only lockfile updates, if desired)
• Security updates (receive only security updates, if desired)