Update plugin spotless to v7.2.1

Author: renovate[bot]

gradle/libs.versions.toml

@@ -105,4 +105,4 @@ kotlin = { id = "org.jetbrains.kotlin.jvm", version = "2.2.0" }
 nullaway = { id = "net.ltgt.nullaway", version = "2.2.0" }
 plantuml = { id = "io.freefair.plantuml", version = "8.14" }
 shadow = { id = "com.gradleup.shadow", version = "9.0.0-rc1" }
-spotless = { id = "com.diffplug.spotless", version = "7.2.0" }
+spotless = { id = "com.diffplug.spotless", version = "7.2.1" }