Bump spotless from 6.7.0 to 6.22.0

Bumps `spotless` from 6.7.0 to 6.22.0.

Updates `com.diffplug.spotless:spotless-plugin-gradle` from 6.7.0 to 6.22.0
- [Changelog](https://github.com/diffplug/spotless/blob/main/CHANGES.md)
- [Commits](diffplug/spotless@gradle/6.7.0...gradle/6.22.0)

Updates `com.diffplug.spotless` from 6.7.0 to 6.22.0

---
updated-dependencies:
- dependency-name: com.diffplug.spotless:spotless-plugin-gradle
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: com.diffplug.spotless
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

gradle/libs.versions.toml

@@ -37,7 +37,7 @@ okhttp = "4.11.0"
 retrofit = "2.9.0"
 retrofitResultAdapter = "1.0.6"
 retrofitKotlinxSerializationJson = "1.0.0"
-spotless = "6.7.0"
+spotless = "6.22.0"
 turbine = "1.0.0"
 
 [libraries]