CI/CD

Add Christmas Island holidays #8173

Job	Run time
Run pre-commit	38s
CodeQL	1m 29s
Test Python 3.12 on macos-latest	1m 25s
Test Python 3.9 on macos-latest	1m 8s
Test Python 3.13 on macos-latest	1m 24s
Test Python 3.13 on ubuntu-latest	1m 36s
Test Python 3.11 on ubuntu-latest	1m 23s
Test Python 3.9 on ubuntu-latest	1m 26s
Test Python 3.12 on windows-latest	2m 45s
Test Python 3.10 on windows-latest	2m 47s
Test Python 3.12 on ubuntu-latest	1m 19s
Test Python 3.10 on ubuntu-latest	1m 27s
Test Python 3.10 on macos-latest	1m 3s
Test Python 3.9 on windows-latest	3m 12s
Test Python 3.11 on macos-latest	48s
Test Python 3.11 on windows-latest	2m 50s
Test Python 3.13 on windows-latest	3m 3s
Test docs build	26s
Build distribution	22s
Test build on windows-latest	4m 26s
Test build on ubuntu-latest	1m 2s
Test build on macos-latest	37s
Create SHA1 checksums and Sigstore signatures	0s
Publish generated artifacts	0s
Update GitHub release with SBOM and signed artifacts	0s
	36m 36s

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