CI/CD

Add Pitcairn Islands holidays #8266

Job	Run time
Run pre-commit	31s
CodeQL	1m 31s
Test Python 3.10 on macos-latest	1m 4s
Test Python 3.9 on ubuntu-latest	1m 19s
Test Python 3.12 on macos-latest	49s
Test Python 3.9 on macos-latest	1m 13s
Test Python 3.11 on macos-latest	1m 6s
Test Python 3.10 on ubuntu-latest	1m 18s
Test Python 3.13 on macos-latest	54s
Test Python 3.12 on ubuntu-latest	1m 22s
Test Python 3.10 on windows-latest	2m 44s
Test Python 3.11 on ubuntu-latest	1m 17s
Test Python 3.9 on windows-latest	2m 40s
Test Python 3.13 on windows-latest	3m 22s
Test Python 3.13 on ubuntu-latest	1m 43s
Test Python 3.12 on windows-latest	2m 52s
Test Python 3.11 on windows-latest	2m 42s
Test docs build	24s
Build distribution	24s
Test build on ubuntu-latest	1m 1s
Test build on windows-latest	4m 3s
Test build on macos-latest	43s
Publish generated artifacts	0s
Create SHA1 checksums and Sigstore signatures	0s
Update GitHub release with SBOM and signed artifacts	0s
	35m 2s

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