Merge branch 'main' into restructure-docs

CHANGES.rst

@@ -30,6 +30,7 @@ Minor changes:
 - Improve contributing documentation by adding a change log requirement, adding a pull request template, adding clear CI enforcement warnings, and updating ``README.rst``. See `Issue 890 <https://github.com/collective/icalendar/issues/890>`_.
 - Make coverage submission optional for CI.
 - Bump ``actions/setup-python`` version from 5 to 6 for CI.
+- Add comment explaining tzdata dependency purpose to prevent confusion. See `Issue 900 <https://github.com/collective/icalendar/issues/900>`_.
 
 Breaking changes:
 

pyproject.toml

@@ -75,6 +75,8 @@ dependencies = [
     # install requirements depending on python version, TODO: Remove with Python 3.8
     # see https://www.python.org/dev/peps/pep-0508/#environment-markers
     "backports.zoneinfo; python_version < '3.9'",
+    # tzdata: IANA timezone database fallback for zoneinfo (required on Windows,
+    # provides current timezone data on all platforms)
     "tzdata"
 ]