Update .NET SDK to 9.0.300, including dependencies

[atifaziz]

This PR updates the solution to use .NET SDK 9.0.300 and updates all system-related dependencies to their latest versions.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.28%. Comparing base (e759411) to head (bcde265).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1103   +/-   ##
=======================================
  Coverage   93.28%   93.28%           
=======================================
  Files         113      113           
  Lines        3439     3439           
  Branches      969      969           
=======================================
  Hits         3208     3208           
  Misses        215      215           
  Partials       16       16           

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