Improve .po files "Language-Team" header consistency #5062

Job	Run time
Run pre-commit	34s
CodeQL	1m 47s
Test Python 3.9 on macos-latest	42s
Test Python 3.10 on macos-latest	1m 4s
Test Python 3.11 on macos-latest	44s
Test Python 3.12 on macos-latest	51s
Test Python 3.13 on macos-latest	55s
Test Python 3.9 on ubuntu-latest	1m 2s
Test Python 3.10 on ubuntu-latest	1m 2s
Test Python 3.11 on ubuntu-latest	1m 1s
Test Python 3.12 on ubuntu-latest	1m 32s
Test Python 3.13 on ubuntu-latest	1m 16s
Test Python 3.9 on windows-latest	1m 44s
Test Python 3.10 on windows-latest	1m 46s
Test Python 3.11 on windows-latest	1m 48s
Test Python 3.12 on windows-latest	2m 8s
Test Python 3.13 on windows-latest	2m 16s
Build distribution	28s
Test docs build	39s
Test build on macos-latest	29s
Test build on ubuntu-latest	51s
Test build on windows-latest	1m 49s
Publish generated artifacts	0s
	26m 28s

Provide feedback