Bump com.diffplug.spotless from 6.25.0 to 7.0.2

Bumps com.diffplug.spotless from 6.25.0 to 7.0.2.

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

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

Author: dependabot[bot]

build.gradle

@@ -6,7 +6,7 @@ plugins {
   id 'scala' // scala support
   id 'signing'
   id 'maven-publish' // publish to a maven repo (local or mvn central, has to be defined)
-  id 'com.diffplug.spotless' version '6.25.0'// code format
+  id 'com.diffplug.spotless' version '7.0.2'// code format
   id "com.github.ben-manes.versions" version '0.51.0'
   id "de.undercouch.download" version "5.6.0" // downloads plugin
   id "kr.motd.sphinx" version "2.10.1" // documentation generation