CI/CD

Add Saint Lucia holidays #5635

Job	Run time
Run pre-commit	32s
CodeQL	1m 42s
Test Python 3.9 on macos-latest	1m 5s
Test Python 3.10 on macos-latest	59s
Test Python 3.11 on macos-latest	42s
Test Python 3.12 on macos-latest	43s
Test Python 3.13 on macos-latest	41s
Test Python 3.9 on ubuntu-latest	55s
Test Python 3.10 on ubuntu-latest	57s
Test Python 3.11 on ubuntu-latest	53s
Test Python 3.12 on ubuntu-latest	1m 12s
Test Python 3.13 on ubuntu-latest	1m 1s
Test Python 3.9 on windows-latest	2m 5s
Test Python 3.10 on windows-latest	1m 51s
Test Python 3.11 on windows-latest	2m 7s
Test Python 3.12 on windows-latest	2m 25s
Test Python 3.13 on windows-latest	1m 35s
Build distribution	18s
Test docs build	29s
Test build on macos-latest	26s
Test build on ubuntu-latest	38s
Test build on windows-latest	2m 23s
Publish generated artifacts	0s
Create SHA1 checksums and Sigstore signatures	0s
Update GitHub release with SBOM and signed artifacts	0s
	25m 39s

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