Upgrade Flutter to 3.38.2

[Gold872]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.09%. Comparing base (c95e240) to head (1fed530).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #311      +/-   ##
==========================================
- Coverage   78.15%   78.09%   -0.07%     
==========================================
  Files          92       92              
  Lines        9226     9234       +8     
==========================================
  Hits         7211     7211              
- Misses       2015     2023       +8     

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