v1.20.1

What's Changed

• Since a lot of users cannot update to Gradle 8+,
  I've downgraded this project's Gradle build to 7.6, which is the new minimum required version for this plugin to work.

• 7.6 was added to the test matrix https://github.com/allegro/axion-release-plugin/actions/runs/16962346640

Changed

• gradle project build downgraded to 7.6.6 by @bgalek in #954

Full Changelog: v1.20.0...v1.20.1