Prepare release 1.1.2

[eduardo-rodrigues]

• Parsing of decay files (aka .dec files):
  • Added latest EvtGen models from Belle-II and LHCb.
  • Minor improvements to documentation.
• Decay-file validation:
  • Added new checks (warnings and diagnostics) for misleading/misconfigured Alias and ChargeConj statements, and for ChargeConj statements for self-conjugate particles.
  • Added tests for all new functionality.
• Dependencies:
  • Added support for Python 3.15.
• CI and tests:
  • Improved typing in tests.
  • Updates and improvements to pre-commit hooks and CI YAML files.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.04%. Comparing base (b4989ee) to head (6151592).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #633   +/-   ##
=======================================
  Coverage   98.04%   98.04%           
=======================================
  Files           6        6           
  Lines        1276     1276           
=======================================
  Hits         1251     1251           
  Misses         25       25           

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