Bump com.diffplug.gradle.spotless from 6.21.0 to 6.22.0

Bumps com.diffplug.gradle.spotless from 6.21.0 to 6.22.0.

---
updated-dependencies:
- dependency-name: com.diffplug.gradle.spotless
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle

@@ -1,7 +1,7 @@
 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 "6.21.0" apply false
+  id "com.diffplug.gradle.spotless" version "6.22.0" apply false
   id "com.gradle.plugin-publish" version "0.21.0" apply false
   id("io.micronaut.minimal.library") version "${micronautGradlePluginVersion}" apply false
 }