Update plugin spotless to v7.2.1 (#1533)

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

Author: renovate[bot]

gradle/libs.versions.toml

@@ -38,4 +38,4 @@ android-lint = "com.android.lint:8.11.1"
 jetbrains-dokka = "org.jetbrains.dokka:2.0.0"
 mavenPublish = "com.vanniktech.maven.publish:0.34.0"
 pluginPublish = { id = "com.gradle.plugin-publish", version.ref = "pluginPublish" }
-spotless = "com.diffplug.spotless:7.2.0"
+spotless = "com.diffplug.spotless:7.2.1"