chore(.github): Add Dependabot configuration file for version updates

[tab]

This commit introduces a new Dependabot configuration file to manage version updates for GitHub Actions and Go modules. The updates are scheduled to occur monthly, with a limit of 10 open pull requests at a time.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.27%. Comparing base (8ab2a6c) to head (aed748e).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master       #4   +/-   ##
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  Coverage   56.27%   56.27%           
=======================================
  Files           7        7           
  Lines         215      215           
=======================================
  Hits          121      121           
  Misses         87       87           
  Partials        7        7           

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