fix regex and remove forbidden windows characters

[Xaver106]

Overview

Fixes #1872

Description

Just some refactoring of the regex

Submitter Checklist

• Make sure you are opening from a topic branch (/feature/fix/docs/ branch (right side)) and not your main branch.
• Ensure that the pull request title represents the desired changelog entry.
• New public fields and methods are annotated with @since TODO.
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[NotMyFault]

I have no access to a windows machine, could you provide an automatic test please, which verifies the desired result?

[Xaver106]

I have no access to a windows machine, could you provide an automatic test please, which verifies the desired result?

This change is not Windows specific. It just modifies the filename verification to not allow windows speciific illegal characters.

[RedstoneFuture]

[NotMyFault]

Untested