Description

Updates the unit tests workflow to prevent unnecessary CI runs.

The unit tests job will now be skipped when changes are limited to:

• Documentation (docs/**, **.md)
• Other GitHub configuration files (.github/**)

Note: Changes to the test workflow file itself remain an exception and will trigger the tests, ensuring we can validate workflow modifications.

PR Checklist

Thank you for opening a Pull Request! Before submitting your PR, there are a
few things you can do to make sure it goes smoothly:

• Make sure you reviewed
  CONTRIBUTING.md
• Make sure to open an issue as a
  bug/issue
  before writing your code! That way we can discuss the change, evaluate
  designs, and agree on the general idea
• Ensure the tests and linter pass
• Code coverage does not decrease (if any source code was changed)
• Appropriate docs were updated (if necessary)
• Make sure to add ! if this involve a breaking change

🛠️ Fixes #<issue_number_goes_here>