gh actions: pin python to 3.12.5 on windows, because .6 has issues (N… #3835

Job	Run time
Web UI Lint and Type Check	1m 11s
Build and Cache Packages	3m 22s
Display metadata for build	1s
Ruff	45s
Test Docker Image	52s
Mypy	47s
Docs Build	48s
Linux	3m 27s
Windows	5m 2s
MacOS	3m 35s
Python 3.12	8m 45s
Python 3.11	8m 6s
Python 3.10	8m 18s
Python 3.9	8m 18s
Publish prerelease on merge commit to master	3m 50s
	57m 7s

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