Log Message:
py-icalendar: update to 6.1.1.

6.1.1 (2025-01-18)

Minor changes:

    Add a weekday attribute to :class:`icalendar.prop.vWeekday` components. See \ 
Issue 749.
    Document :class:`icalendar.prop.vRecur` property. See Issue 758.
    Print failure of doctest to aid debugging.
    Improve documentation of :class:`icalendar.prop.vGeo`
    Fix tests, improve code readability, fix typing. See Issue 766 and Issue 765.

Breaking changes:

    The relative attribute of vWeekday components has the correct sign now. See \ 
Issue 749.

New features:

    Add :ref:`Security Policy`
    Python types in documentation now link to their documentation pages using \ 
intersphinx.