Bump com.diffplug.spotless:spotless-plugin-gradle from 6.25.0 to 7.0.0

Bumps [com.diffplug.spotless:spotless-plugin-gradle](https://github.com/diffplug/spotless) from 6.25.0 to 7.0.0.
- [Release notes](https://github.com/diffplug/spotless/releases)
- [Changelog](https://github.com/diffplug/spotless/blob/main/CHANGES.md)
- [Commits](diffplug/spotless@gradle/6.25.0...gradle/7.0.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

build.gradle

@@ -13,7 +13,7 @@ buildscript {
         classpath 'net.researchgate:gradle-release:3.0.2'
         classpath "com.github.ben-manes:gradle-versions-plugin:0.51.0"
         classpath "gradle.plugin.com.github.jengelman.gradle.plugins:shadow:7.0.0"
-        classpath "com.diffplug.spotless:spotless-plugin-gradle:6.25.0"
+        classpath "com.diffplug.spotless:spotless-plugin-gradle:7.0.0"
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }