Merge tag '1.3.21' into develop

Rel

* tag '1.3.21':
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release clojure-maven-plugin-1.3.21
Reverted maven-toolchain to a version in central.
[maven-release-plugin] prepare release clojure-maven-plugin-1.3.22
[maven-release-plugin] prepare for next development iteration
Merge branch 'release/1.3.22'

* release/1.3.22:
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release clojure-maven-plugin-1.3.22
  Reverted maven-toolchain to a version in central.