upgraded solution to NET 9.0

[martinzima]

-upgraded dependencies: Entity Framework Core 9.0, AutoMapper 14.0, Hangfire 1.8, minor version updates for other)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 35.52%. Comparing base (cec269f) to head (ba5d4a2).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #76      +/-   ##
===========================================
- Coverage    35.57%   35.52%   -0.05%     
===========================================
  Files          472      472              
  Lines         6558     6558              
  Branches       782      779       -3     
===========================================
- Hits          2333     2330       -3     
- Misses        4121     4123       +2     
- Partials       104      105       +1     

Files with missing lines	Coverage Δ
...astructure/Events/Upgrades/UpgradedEventMessage.cs	71.42% <ø> (ø)

... and 3 files with indirect coverage changes

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