click 8.3.2

This is the Click 8.3.2 fix release, which fixes bugs but does not otherwise change behavior and should not result in breaking changes compared to the latest feature release.

PyPI: https://pypi.org/project/click/8.3.2/ Changes: https://click.palletsprojects.com/page/changes/#version-8-3-2 Milestone: https://github.com/pallets/click/milestone/29

• Fix handling of flag_value when is_flag=False to allow such options to be used without an explicit value. #3084 #3152
• Hide Sentinel.UNSET values as None when using lookup_default(). #3136 #3199 #3202 #3209 #3212 #3224
• Prevent _NamedTextIOWrapper from closing streams owned by StreamMixer. #824 #2991 #2993 #3110 #3139 #3140
• Add comprehensive tests for CliRunner stream lifecycle, covering logging interaction, multi-threaded safety, and sequential invocation isolation. Add high-iteration stress tests behind a stress marker with a dedicated CI job. #3139
• Fix callable flag_value being instantiated when used as a default via default=True. #3121 #3201 #3213 #3225