chore(deps): Update dependency com.diffplug.spotless:spotless-plugin-gradle to v7

Author: renovate[bot]

gradle/libs.versions.toml

@@ -10,7 +10,7 @@ mixin = "0.15.5+mixin.0.8.7"
 mixinExtras = "0.4.1"
 nexus = "2.0.0"
 shadow = "8.1.1"
-spotless = "6.25.0"
+spotless = "7.0.2"
 tinylog = "2.7.0"
 
 [libraries]