CI/CD

Add Christmas Island holidays #8178

Job	Run time
Run pre-commit	30s
CodeQL	1m 32s
Test Python 3.9 on ubuntu-latest	1m 23s
Test Python 3.10 on macos-latest	1m 0s
Test Python 3.11 on macos-latest	58s
Test Python 3.9 on macos-latest	1m 6s
Test Python 3.12 on macos-latest	56s
Test Python 3.10 on ubuntu-latest	1m 17s
Test Python 3.11 on ubuntu-latest	1m 15s
Test Python 3.12 on ubuntu-latest	1m 27s
Test Python 3.13 on macos-latest	52s
Test Python 3.13 on ubuntu-latest	1m 41s
Test Python 3.11 on windows-latest	2m 49s
Test Python 3.10 on windows-latest	3m 11s
Test Python 3.13 on windows-latest	3m 56s
Test Python 3.12 on windows-latest	2m 50s
Test Python 3.9 on windows-latest	2m 45s
Test docs build	26s
Build distribution	21s
Test build on windows-latest	1m 2s
Test build on macos-latest	36s
Test build on ubuntu-latest	1m 0s
Publish generated artifacts	1s
Create SHA1 checksums and Sigstore signatures	1s
Update GitHub release with SBOM and signed artifacts	1s
	32m 56s

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