rec: rust related updates

[omoerbeek]

Short description

1. Update rust version to 1.81.0
2. Start using serde_yml as a replacement for serde_yaml (a few tests needed update as the quoting rules on output changed).
3. Update Cargo.lock

I seems serde_yml (the fork) is actively maintained. A large part of the activity is adding unit test, so that feels good so far.

Checklist

I have:

• read the CONTRIBUTING.md document
• compiled this code
• tested this code
• included documentation (including possible behaviour changes)
• documented the code
• added or modified regression test(s)
• added or modified unit test(s)

[coveralls]

Pull Request Test Coverage Report for Build 10809095251

Details

• 30 of 30 (100.0%) changed or added relevant lines in 2 files are covered.
• 1828 unchanged lines in 61 files lost coverage.
• Overall coverage decreased (-0.2%) to 64.511%

---

Files with Coverage Reduction	New Missed Lines	%
pdns/webserver.hh	1	66.33%
pdns/validate.cc	1	68.19%
pdns/dnstap.cc	2	70.97%
pdns/cachecleaner.hh	2	79.79%
ext/luawrapper/include/LuaContext.hpp	2	13.45%
pdns/ws-api.cc	2	84.91%
pdns/lock.hh	2	84.71%
pdns/unix_utility.cc	3	43.78%
pdns/epollmplexer.cc	3	83.13%
pdns/sstuff.hh	3	56.2%

Totals
Change from base Build 10793790851:	-0.2%
Covered Lines:	124599
Relevant Lines:	162255

---

💛 - Coveralls

[omoerbeek]

Spotted a YAML conversion issue while working on this