Fix release note building and check

[flying-sheep]

See https://setuptools-scm.readthedocs.io/en/latest/extending/#setuptools_scmversion_scheme:

Semantic versioning for projects with release branches. The same as guess-next-dev (incrementing the pre-release or micro segment) however when on a release branch: a branch whose name (ignoring namespace) parses as a version that matches the most recent tag up to the minor segment. Otherwise if on a non-release branch, increments the minor segment and sets the micro segment to zero, then appends .devN

Apparently the “ignoring namespace” makes it work with our <major>.<minor>.x branch names

I checked if the new check works:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.40%. Comparing base (7ab0bfe) to head (2b740c8).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3239      +/-   ##
==========================================
- Coverage   76.73%   76.40%   -0.33%     
==========================================
  Files         109      109              
  Lines       12529    12529              
==========================================
- Hits         9614     9573      -41     
- Misses       2915     2956      +41     

see 1 file with indirect coverage changes