Update plugin spotless to v8

Author: renovate[bot]

gradle/libs.versions.toml

@@ -91,7 +91,7 @@ kotlin-cocoapods = { id = "org.jetbrains.kotlin.native.cocoapods", version.ref =
 kotlin-multiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref = "kotlin" }
 kotlin-serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin" }
 secrets = { id = "com.google.android.libraries.mapsplatform.secrets-gradle-plugin", version = "2.0.1" }
-spotless = { id = "com.diffplug.spotless", version = "7.2.1" }
+spotless = { id = "com.diffplug.spotless", version = "8.0.0" }
 
 # Project conventional plugins
 grodnoroads-application = { id = "grodnoroads.application", version = "unspecified" }