CI/CD

Update working days calculation #5345

Job	Run time
Run pre-commit	37s
CodeQL	1m 19s
Test Python 3.9 on macos-latest	53s
Test Python 3.10 on macos-latest	52s
Test Python 3.11 on macos-latest	36s
Test Python 3.12 on macos-latest	41s
Test Python 3.13 on macos-latest	34s
Test Python 3.9 on ubuntu-latest	1m 8s
Test Python 3.10 on ubuntu-latest	1m 3s
Test Python 3.11 on ubuntu-latest	53s
Test Python 3.12 on ubuntu-latest	1m 31s
Test Python 3.13 on ubuntu-latest	1m 10s
Test Python 3.9 on windows-latest	1m 49s
Test Python 3.10 on windows-latest	1m 58s
Test Python 3.11 on windows-latest	2m 24s
Test Python 3.12 on windows-latest	2m 17s
Test Python 3.13 on windows-latest	2m 30s
Test docs build	44s
Build distribution	20s
Test build on macos-latest	27s
Test build on ubuntu-latest	55s
Test build on windows-latest	2m 47s
Publish generated artifacts	0s
Create SHA1 checksums and Sigstore signatures	0s
Update GitHub release with SBOM and signed artifacts	0s
	27m 28s

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