Add timestamp server to code signature

[maxi322]

Type of Change

• New feature
• Bug fix
• Documentation update
• Refactoring
• Hotfix
• Security patch
• UI/UX improvement
• CI improvement

Description

Add a timestamp signature to the final artifact in order to still have a vaild signature even when the code signing certificate is already expired.

Testing

I have done an offline test with a local selfsigned codesign certificate in order to verify that this actually works with powershell scripts.

Impact

The final released powershell script carries a valid code signature even after the certificate with which it was signed is already expired.

Issue related to PR

• Resolves -

Additional Information

Checklist

• My code adheres to the coding and style guidelines of the project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no errors/warnings/merge conflicts.