Bump com.diffplug.spotless from 6.6.1 to 6.7.0 (#2267)

Bumps com.diffplug.spotless from 6.6.1 to 6.7.0.

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle

@@ -28,7 +28,7 @@ buildscript {
 }
 
 plugins {
-	id "com.diffplug.spotless" version "6.6.1"
+	id "com.diffplug.spotless" version "6.7.0"
 	id 'org.asciidoctor.jvm.convert' version '3.3.2' apply false
 	id 'org.asciidoctor.jvm.pdf' version '3.3.2' apply false
 	id 'com.google.osdetector' version '1.7.0'