Update China holidays: add observed and substituted holidays in 2001-2024

[KJhellico]

Proposed change

Resolves #1601

Update China holidays: add observed and substituted holidays in 2001-2024.

Type of change

• New country/market holidays support (thank you!)
• Supported country/market holidays update (calendar discrepancy fix, localization)
• Existing code/documentation/test/process quality improvement (best practice, cleanup, refactoring, optimization)
• Dependency update (version deprecation/upgrade)
• Bugfix (non-breaking change which fixes an issue)
• Breaking change (a code change causing existing functionality to break)
• New feature (new python-holidays functionality in general)

Checklist

• I've followed the contributing guidelines
• I've run make pre-commit, it didn't generate any changes
• I've run make test, all tests passed locally

[coveralls]

Pull Request Test Coverage Report for Build 7389607481

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• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 7379327874:	0.0%
Covered Lines:	10220
Relevant Lines:	10220

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💛 - Coveralls

[PPsyrius]

Thanks for improving the Chinese calendar, here are some of the Thai language translations that likely need to be changed here. 👀

[KJhellico]

@PPsyrius, thank you! It's Google Translate 🤷🏻‍♂️

[arkid15r]

LGTM

[arkid15r]

BTW, does this PR close #1601 ?

[KJhellico]

Yes, this includes holidays shifting in 2024.

[sonarqubecloud]

Quality Gate passed

The SonarCloud Quality Gate passed, but some issues were introduced.

16 New issues
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud