Update Australia holidays

[KJhellico]

Proposed change

Update Australia holidays (according to official sources).

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 8470616463

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 333 of 333 (100.0%) changed or added relevant lines in 1 file 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 8348428447:	0.0%
Covered Lines:	10968
Relevant Lines:	10968

---

💛 - Coveralls

[arkid15r]

LGTM, great work on 🇦🇺

Just a couple of suggestions:

[sonarcloud]

Quality Gate passed

Issues
15 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.9% Duplication on New Code

See analysis details on SonarCloud

[arkid15r]

Merging this in, thanks @KJhellico

[engserv]

Kings birthday is on September 23rd in Western Australia (WA) in 2024.
https://www.wa.gov.au/service/employment/workplace-agreements/public-holidays-western-australia

[arkid15r]

Kings birthday is on September 23rd in Western Australia (WA) in 2024. https://www.wa.gov.au/service/employment/workplace-agreements/public-holidays-western-australia

Thanks for reporting this, I've created a new issue based on your comment.