Update plugin spotless to v7.0.0 (#1133)

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

Author: renovate[bot]

gradle/libs.versions.toml

@@ -37,4 +37,4 @@ assertk = "com.willowtreeapps.assertk:assertk:0.28.1"
 kotlin = "org.jetbrains.kotlin.jvm:2.1.0"
 android-lint = "com.android.lint:8.7.3"
 jetbrains-bcv = "org.jetbrains.kotlinx.binary-compatibility-validator:0.17.0"
-spotless = "com.diffplug.spotless:7.0.0.BETA4"
+spotless = "com.diffplug.spotless:7.0.0"