CI/CD

Add Papua New Guinea holidays #3356

Job	Run time
Run pre-commit	30s
Test Python 3.8 on macOS-latest	1m 3s
Test Python 3.9 on macOS-latest	1m 46s
Test Python 3.10 on macOS-latest	1m 1s
Test Python 3.11 on macOS-latest	1m 19s
Test Python 3.12 on macOS-latest	1m 6s
Test Python pypy-3.9 on macOS-latest	5m 9s
Test Python pypy-3.10 on macOS-latest	2m 20s
Test Python 3.8 on ubuntu-latest	43s
Test Python 3.9 on ubuntu-latest	42s
Test Python 3.10 on ubuntu-latest	52s
Test Python 3.11 on ubuntu-latest	53s
Test Python 3.12 on ubuntu-latest	54s
Test Python pypy-3.9 on ubuntu-latest	2m 7s
Test Python pypy-3.10 on ubuntu-latest	2m 19s
Test Python 3.8 on windows-latest	1m 24s
Test Python 3.9 on windows-latest	1m 22s
Test Python 3.10 on windows-latest	1m 34s
Test Python 3.11 on windows-latest	1m 47s
Test Python 3.12 on windows-latest	1m 24s
Test Python pypy-3.9 on windows-latest	4m 53s
Test Python pypy-3.10 on windows-latest	4m 44s
Finish coveralls	4s
Build distribution	2s
Publish to PyPI	1s
	39m 59s

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