Update plugin spotless to v7.0.0 (#707)

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

gradle/libs.versions.toml

@@ -37,7 +37,7 @@ lint = { id = "com.android.lint", version = "8.7.3" }
 mavenPublish = { id = "com.vanniktech.maven.publish", version = "0.30.0" }
 mavenShadow = { id = "com.github.johnrengelman.shadow", version = "8.1.1" }
 moshix = { id = "dev.zacsweers.moshix", version = "0.28.0" } # Always replaced by the local plugin
-spotless = { id = "com.diffplug.spotless", version = "7.0.0.BETA4" }
+spotless = { id = "com.diffplug.spotless", version = "7.0.0" }
 
 [libraries]
 agp = { module = "com.android.tools.build:gradle", version.ref = "agp" }