[maven-release-plugin] copy for tag checkstyle-10.21.2

[maven-release-plugin] copy for tag checkstyle-10.21.1

[maven-release-plugin] copy for tag checkstyle-10.21.0

[maven-release-plugin] copy for tag checkstyle-10.20.2

[maven-release-plugin] copy for tag checkstyle-10.20.1

[maven-release-plugin] copy for tag checkstyle-10.20.0

[maven-release-plugin] copy for tag checkstyle-10.19.0

[maven-release-plugin] copy for tag checkstyle-10.18.2

[maven-release-plugin] copy for tag checkstyle-10.18.1

[maven-release-plugin] copy for tag checkstyle-10.18.0