Update spotless to v7 (#638)

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

Author: renovate[bot]

gradle/libs.versions.toml

@@ -42,7 +42,7 @@ playServicesOssLicenses = "17.1.0"
 playServicesWearable = "19.0.0"
 robolectric = "4.3.1"
 splashscreen = "1.1.0-rc01"
-spotless = "6.25.0"
+spotless = "7.0.1"
 sqlDelight = "2.0.2"
 testCoreKtx = "1.4.0"
 timber = "5.0.1"