Update plugin release to v1.21.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
pl.allegro.tech.build.axion-release	1.18.18 → 1.21.1

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Configuration

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.35%. Comparing base (3674d94) to head (a2fa270).
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Additional details and impacted files

@@            Coverage Diff            @@
##             master      #32   +/-   ##
=========================================
  Coverage     70.35%   70.35%           
  Complexity       44       44           
=========================================
  Files             5        5           
  Lines           199      199           
  Branches         26       26           
=========================================
  Hits            140      140           
  Misses           41       41           
  Partials         18       18           

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