Keep GitHub Actions up to date with GitHub's Dependabot

[cclauss]

Fixes warnings like at the bottom of
https://github.com/TheAlgorithms/Go/actions/runs/11144175146

• Keeping your actions up to date with Dependabot
• Configuration options for the dependabot.yml file - package-ecosystem

[cclauss]

@raklaptudirm @yanglbme Your reviews, please.

https://github.com/golangci/golangci-lint-action/releases

[cclauss]

Generated:

• chore(deps): bump the github-actions group with 4 updates #760

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.68%. Comparing base (495cff8) to head (505db57).
⚠️ Report is 15 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #746   +/-   ##
=======================================
  Coverage   87.68%   87.68%           
=======================================
  Files         209      209           
  Lines        5547     5547           
=======================================
  Hits         4864     4864           
  Misses        542      542           
  Partials      141      141           

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