chore: Use codecov token for code report uploads

[mattcreaser]

• PR title and description conform to Pull Request guidelines.

Issue #, if available:

Description of changes:
Use configured codecov token to upload coverage reports to avoid rate limiting.

How did you test these changes?

Documentation update required?

• No
• Yes (Please include a PR link for the documentation update)

General Checklist

• Added Unit Tests
• Added Integration Tests
• Security oriented best practices and standards are followed (e.g. using input sanitization, principle of least privilege, etc)
• Ensure commit message has the appropriate scope (e.g fix(storage): message, feat(auth): message, chore(all): message)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 41.95%. Comparing base (fb4b15b) to head (07414e7).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3045      +/-   ##
==========================================
+ Coverage   41.92%   41.95%   +0.03%     
==========================================
  Files         992      992              
  Lines       31537    31542       +5     
  Branches     4644     4645       +1     
==========================================
+ Hits        13223    13235      +12     
+ Misses      16872    16862      -10     
- Partials     1442     1445       +3     

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