Update collect coverage action to rely on v4

[notaphplover]

Description

• Fixes codecov integration to submit code coverage.

Types of changes

• Updated docs / Refactor code / Added a tests case (non-breaking change)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.
• I have updated the changelog.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.78%. Comparing base (447e71f) to head (bfd8325).
Report is 5 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1588      +/-   ##
==========================================
+ Coverage   99.48%   99.78%   +0.29%     
==========================================
  Files          53       53              
  Lines        1370     1369       -1     
  Branches      200      200              
==========================================
+ Hits         1363     1366       +3     
+ Partials        7        3       -4     

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