Switch to `bump-my-version`

[Helveg]

Describe the work done

bump2version isn't maintained anymore, and bump-my-version is an improved maintained fork.

Tasks

• [x] Updated documentation

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📚 Documentation preview 📚: https://bsb--818.org.readthedocs.build/en/818/

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 85.43%. Comparing base (3701883) to head (8e37a4e).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #818 +/- ## ======================================= Coverage 85.43% 85.43% ======================================= Files 104 104 Lines 13755 13755 ======================================= Hits 11752 11752 Misses 2003 2003 ```

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