CI/CD

Add Cayman Islands holidays (#2706) #8278

Job	Run time
Run pre-commit	32s
CodeQL	1m 26s
Test Python 3.9 on macos-latest	1m 12s
Test Python 3.11 on macos-latest	1m 9s
Test Python 3.10 on macos-latest	1m 19s
Test Python 3.12 on macos-latest	53s
Test Python 3.10 on ubuntu-latest	1m 18s
Test Python 3.9 on ubuntu-latest	1m 19s
Test Python 3.13 on macos-latest	57s
Test Python 3.12 on ubuntu-latest	1m 22s
Test Python 3.11 on ubuntu-latest	1m 15s
Test Python 3.9 on windows-latest	2m 51s
Test Python 3.11 on windows-latest	2m 54s
Test Python 3.10 on windows-latest	2m 53s
Test Python 3.13 on ubuntu-latest	1m 36s
Test Python 3.13 on windows-latest	3m 10s
Test Python 3.12 on windows-latest	2m 39s
Build distribution	22s
Test docs build	28s
Test build on windows-latest	4m 3s
Test build on macos-latest	36s
Test build on ubuntu-latest	1m 1s
Publish generated artifacts	0s
Update GitHub release with SBOM and signed artifacts	0s
Create SHA1 checksums and Sigstore signatures	0s
	35m 15s

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