Update dependency com.diffplug.spotless:spotless-plugin-gradle to v6.25.0

Author: renovate[bot]

Diff for: build.gradle

@@ -18,7 +18,7 @@ buildscript {
     classpath "com.android.tools.build:gradle:7.1.2"
     classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     classpath "com.google.dagger:hilt-android-gradle-plugin:$dagger_hilt_version"
-    classpath "com.diffplug.spotless:spotless-plugin-gradle:6.3.0"
+    classpath "com.diffplug.spotless:spotless-plugin-gradle:6.25.0"
 
     // NOTE: Do not place your application dependencies here; they belong
     // in the individual module build.gradle files