Update icalendar requirement from <5.1,>=4.0.3 to >=4.0.3,<6.2

[dependabot]

Updates the requirements on icalendar to permit the latest version.

Release notes

Sourced from icalendar's releases.

v6.1.0

To view the changes, please see the Changelog. This release can be installed from PyPI.

Changelog

Sourced from icalendar's changelog.

6.1.0 (2024-11-22)

Minor changes:

• Add end, start, duration, DTSTART, DUE, and DURATION attributes to Todo components. See Issue 662_.
• Add DTSTART, TZOFFSETTO and TZOFFSETFROM properties to TimezoneStandard and TimezoneDaylight. See Issue 662_.
• Format test code with Ruff. See Issue 672 <https://github.com/collective/icalendar/issues/672>_.
• Document the Debian package. See Issue 701 <https://github.com/collective/icalendar/issues/701>_.
• Document vDatetime.from_ical
• Allow passing a datetime.date to TZP.localize_utc and TZP.localize methods.
• Document component classes with description from :rfc:5545.
• Merge "File Structure" and "Overview" sections in the docs. See Issue 626 <https://github.com/collective/icalendar/issues/626>_.
• Update code blocks in usage.rst with the correct lexer.
• Tidy up the docstring for icalendar.prop.vPeriod.
• Improve typing and fix typing issues

New features:

• Add VALARM properties for :rfc:9074. See Issue 657 <https://github.com/collective/icalendar/issues/657>_
• Test compatibility with Python 3.13
• Add Timezone.from_tzinfo() and Timezone.from_tzid() to create a Timezone component from a datetime.tzinfo timezone. See Issue 722_.
• Add icalendar.prop.tzid_from_tzinfo.
• Add icalendar.alarms module to calculate alarm times. See Issue 716 <https://github.com/collective/icalendar/issues/716>_.
• Add Event.alarms and Todo.alarms to access alarm calculation.
• Add Component.DTSTAMP and Component.LAST_MODIFIED properties for datetime in UTC.
• Add Component.is_thunderbird() to check if the component uses custom properties by Thunderbird.
• Add X_MOZ_SNOOZE_TIME and X_MOZ_LASTACK properties to Event and Todo.
• Add Alarm.ACKNOWLEDGED, Alarm.TRIGGER, Alarm.REPEAT, and Alarm.DURATION properties as well as Alarm.triggers to calculate alarm triggers.
• Add __doc__ string documentation for vDate, vBoolean, vCalAddress, vDuration, vFloat, vGeo, vInt, vPeriod, vTime, vUTCOffset and vUri. See Issue 742 <https://github.com/collective/icalendar/issues/742>_.
• Add DTSTART, TZOFFSETTO, and TZOFFSETFROM to TimezoneStandard and TimezoneDaylight
• Use example methods of components without arguments.
• Add events, timezones, and todos property to Calendar for nicer access.
• To calculate which timezones are in use and add them to the Calendar when needed these methods are added: get_used_tzids, get_missing_tzids, and add_missing_timezones.
• Identify the TZID of more timezones from dateutil.
• Identify totally unknown timezones using a UTC offset lookup tree generated in icalendar.timezone.equivalent_timezone_ids and stored in icalendar.timezone.equivalent_timezone_ids.
• Add icalendar.timezone.tzid to identify a timezone's TZID.

Bug fixes:

• Add icalendar.timezone to the documentation.

.. _Issue 722: collective/icalendar#722

6.0.1 (2024-10-13)

New features:

... (truncated)

Commits

• a492d69 Merge pull request #748 from niccokunzmann/release
• 9f4e436 version 6.1.0
• 590c4b6 Merge pull request #746 from collective/prop-docstring
• c41557d Merge branch 'main' into prop-docstring
• 345b96c This adds generating VTIMEZONE components from tzinfo objects (#741)
• 8e8af07 changelog
• 1f8b266 changelog
• 921ad52 Tidy up the docstring for icalendar.prop.vPeriod
• 32c5049 Merge pull request #745 from SerifOZ/doc
• 5732b8f Merge pull request #739 from natashamm/file_stucture_overview
• Additional commits viewable in compare view

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