Update plugin spotless to v6.25.0

Author: renovate[bot]

gradle/libs.versions.toml

@@ -55,7 +55,7 @@ kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
 compose-compiler = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }
 ksp = { id = "com.google.devtools.ksp", version.ref = "ksp" }
 publish = { id = "com.vanniktech.maven.publish", version = "0.31.0" }
-spotless = { id = "com.diffplug.spotless", version = "6.18.0" }
+spotless = { id = "com.diffplug.spotless", version = "6.25.0" }
 wire = { id = "com.squareup.wire", version = "5.3.1" }
 
 # Used by the sample app