fix: Add support for Dart 3.4, 3.5; remove support for Dart 3.0, 3.1

[mbfakourii]

Pull Request

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• Any contribution is under this license.
• Link this pull request to an issue.

Issue

Add support for Dart 3.4, 3.5 and remove support for Dart 3.0,3.1

Closes: #1010

Approach

n/a

Tasks

• Add tests
• Add changes to documentation (guides, repository pages, code comments)

[parse-github-assistant]

Thanks for opening this pull request!

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 43.48%. Comparing base (c388545) to head (8969ee5).
Report is 8 commits behind head on master.

Files with missing lines	Patch %	Lines
packages/dart/lib/src/network/parse_query.dart	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1016      +/-   ##
==========================================
+ Coverage   43.37%   43.48%   +0.11%     
==========================================
  Files          61       61              
  Lines        3463     3463              
==========================================
+ Hits         1502     1506       +4     
+ Misses       1961     1957       -4     

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