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 @@ import org.jetbrains.intellij.platform.gradle.tasks.VerifyPluginTask
 plugins {
     id 'java'
     id 'org.jetbrains.intellij.platform' version '2.11.0'
-    id 'com.diffplug.spotless' version '6.25.0'
+    id 'com.diffplug.spotless' version '8.4.0'
 }
 
 group = "org.kohsuke.stapler.idea"