Bump com.gradle.plugin-publish from 0.21.0 to 1.2.1

Bumps com.gradle.plugin-publish from 0.21.0 to 1.2.1.

---
updated-dependencies:
- dependency-name: com.gradle.plugin-publish
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

build.gradle

@@ -2,7 +2,7 @@ plugins {
   id "com.github.hierynomus.license" version "0.16.1" apply false
   id "com.github.ben-manes.versions" version "0.47.0" apply false
   id "com.diffplug.gradle.spotless" version "6.19.0" apply false
-  id "com.gradle.plugin-publish" version "0.21.0" apply false
+  id "com.gradle.plugin-publish" version "1.2.1" apply false
 }
 
 subprojects { subproject ->