Update dependency com.diffplug.spotless:spotless-plugin-gradle to v7 (#2524)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gradle/libs.versions.toml

@@ -40,7 +40,7 @@ xmlutil-serialization = 'io.github.pdvrieze.xmlutil:serialization:0.90.3'
 
 atomicFuPlugin = "org.jetbrains.kotlinx:atomicfu-gradle-plugin:0.26.1"
 dokkaPlugin = "org.jetbrains.dokka:dokka-gradle-plugin:2.0.0"
-spotlessPlugin = "com.diffplug.spotless:spotless-plugin-gradle:6.25.0"
+spotlessPlugin = "com.diffplug.spotless:spotless-plugin-gradle:7.0.0"
 gradleMavenPublishPlugin = "com.vanniktech:gradle-maven-publish-plugin:0.30.0"
 buildConfigPlugin = "com.github.gmazzo:gradle-buildconfig-plugin:3.1.0"