[python] Only add maturity/suffix to version if groups matched

[mcm001]

No description provided.

[gerth2]

Looks solid to me. Copied the logic into another file and ran a few tests, I'm happy with the results:

PS C:\Users\chris\git\firstRoboPy> & C:/Users/chris/AppData/Local/Programs/Python/Python312/python.exe c:/Users/chris/git/firstRoboPy/testVersions.py
==============
Git Describe: v2024.1.1
using full release 2024.1.1
Building version 2024.1.1
==============
Git Describe: v2024.1.2
using full release 2024.1.2
Building version 2024.1.2
==============
Git Describe: v2024.1
Warning, no valid version found
Building version v2024.1
==============
Git Describe: v2024.1.2-beta-4.6
using beta group matcher
Building version v2024.1.2.beta.46
==============
Git Describe: asdfasdf
Warning, no valid version found
Building version asdfasdf

[gerth2]

🚀