Update plugin spotless to v6.25.0 (#308)

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

gradle/libs.versions.toml

@@ -31,5 +31,5 @@ kotlinJvm = { id = "org.jetbrains.kotlin.jvm", version.ref = "kotlin" }
 dokka = { id = "org.jetbrains.dokka", version = "1.9.10" }
 mavenPublish = { id = "com.vanniktech.maven.publish", version = "0.27.0" }
 poko = { id = "dev.drewhamilton.poko", version = "0.15.2" }
-spotless = { id = "com.diffplug.spotless", version = "6.24.0" }
+spotless = { id = "com.diffplug.spotless", version = "6.25.0" }
 kotlinApiDump = { id = "org.jetbrains.kotlinx.binary-compatibility-validator", version = "0.13.2" }