chore(deps): update dependency com.diffplug.spotless to v6.20.0

Author: renovate[bot]

gradle/libs.versions.toml

@@ -6,7 +6,7 @@ serialization = "1.5.1"
 ktorio = "2.3.0"
 binary_compat = "0.13.2"
 
-spotless = "6.15.0"
+spotless = "6.20.0"
 ktlint = "0.46.1"
 
 [plugins]