Update dependency com.diffplug.spotless to v7

Author: renovate[bot]

gradle/libs.versions.toml

@@ -15,7 +15,7 @@ androidx-annotation = "1.9.1"
 compose-activity = "1.9.3"
 compose-multiplatform = "1.7.3"
 
-spotless = "6.25.0"
+spotless = "7.0.2"
 ktlint = "1.5.0"
 
 test-diffutil = "4.15"