[Bug]: Swiss Regional Holidays are incorrect

[herpaderpaldent]

What happened?

The current implementation of Switzerland with its regional holidays is incorrect.
Among various things i found the following errors and have provided an PR that improves the implementation and fixes the errors.
This issue links to a faulty pull requests with tests showing some of the errors.

How to reproduce the bug

see PR: #194

Package Version

dev-main

PHP Version

8.1

Which operating systems does with happen with?

No response

Notes

No response

[herpaderpaldent]

I fail to understand how this can be a discussion.

This is a boolean-topic, no discussion needed: either you have the swiss holidays correct or you don't.

This packages does not have the swiss holidays correct. They are wrong, the PR with the failing tests are proving it. Either you can correct your package to produce correct holidays or you don't. Does not need a discussion