Add bump-my-version

[fepegar]

This pull request includes several changes to the version bumping configuration and related files. The most important changes involve replacing bump2version with bump-my-version and updating the configuration accordingly.

Changes to version bumping configuration:

• .bumpversion.cfg: Removed the old bumpversion configuration file.
• pyproject.toml: Replaced bump2version with bump-my-version in the maintain section and added the new bumpversion configuration under [tool.bumpversion].

New bump commands:

• justfile: Added new commands bump and bump-dry for version bumping using bump-my-version.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.48%. Comparing base (9647c42) to head (55bc848).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1248      +/-   ##
==========================================
- Coverage   87.13%   84.48%   -2.66%     
==========================================
  Files          92       92              
  Lines        5962     5962              
==========================================
- Hits         5195     5037     -158     
- Misses        767      925     +158     

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