Upgrading flutter to 3.24.3

[DGoiana]

Had to bump flutter_local_notifications due to an error in the latest flutter version. More here.

Had to bump custom_lint once it was not looking for package-config.json the right way. More here

Had to bump leancode_lint due to an error in .pub-cache files.

Review checklist

• Terms and conditions reflect the current change
• Contains enough appropriate tests
• If aimed at production, writes a new summary in whatsnew/whatsnew-pt-PT
• Properly adds an entry in changelog.md with the change
• If PR includes UI updates/additions, its description has screenshots
• Behavior is as expected
• Clean, well-structured code

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 25 lines in your changes missing coverage. Please review.

Project coverage is 11%. Comparing base (8228604) to head (bb1d389).
Report is 2 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff           @@
##           develop   #1348   +/-   ##
=======================================
- Coverage       11%     11%   -0%     
=======================================
  Files          267     267           
  Lines         7301    7310    +9     
=======================================
  Hits           803     803           
- Misses        6498    6507    +9     

[thePeras]

Nice work!