Improve version regex and add tests

[MGaetan89]

Pull request

Description

This PR updates the regex used to validate the version of the library.

Changes made

• Self-explanatory.

Checklist

• Your branch has been rebased onto the main branch.
• APIs have been properly documented (if relevant).
• The documentation has been updated (if relevant).
• New unit tests have been written (if relevant).
• The demo has been updated (if relevant).
• All pull request status checks pass.

[github-actions]

Code Coverage

Overall Project	48.97% -0.13%	🟢
Files changed	44.23%	🟢

Module	Coverage
Kover Gradle Plugin XML report for :plugins	9.19% -2.75%	🟢

Files

Module	File	Coverage
Kover Gradle Plugin XML report for :plugins	VersionConfig.kt	100%	🟢
	PillarboxAndroidApplicationPlugin.kt	0% -9.36%	🟢
	PillarboxAndroidLibraryPublishingPlugin.kt	0% -3.12%	🟢

[MGaetan89]

I'll check the workflow regex on my fork before we can merge this.

[MGaetan89]

The PR status points to the wrong PR.
This PR builds successfully, as it can be seen here.