Prepare to release

[roxblnfk]

🔍 What was changed

• Undeprecate ActiveMapper
• Enhanced transaction API with improved transact() and groupActions() methods
• transact() now provides both DatabaseInterface and EntityManager with immediate execution
• groupActions() supports nesting and uses isolated Unit of Work instances
• saveOrFail()/deleteOrFail() no longer throw exceptions inside groupActions()

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (1.x@69358b3). Learn more about missing BASE report.

Additional details and impacted files

@@          Coverage Diff           @@
##             1.x      #38   +/-   ##
======================================
  Coverage       ?   97.14%           
  Complexity     ?       59           
======================================
  Files          ?       10           
  Lines          ?      175           
  Branches       ?        0           
======================================
  Hits           ?      170           
  Misses         ?        5           
  Partials       ?        0           

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