chore(deps): update alpine docker tag to v3.21.2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
alpine	stage	patch	3.21.1 -> 3.21.2

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.06%. Comparing base (93c1084) to head (d71525e).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #412   +/-   ##
=======================================
  Coverage   63.06%   63.06%           
=======================================
  Files          16       16           
  Lines         953      953           
  Branches       88       88           
=======================================
  Hits          601      601           
  Misses        322      322           
  Partials       30       30           

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