Bump com.diffplug.spotless from 6.21.0 to 6.23.1

Bumps com.diffplug.spotless from 6.21.0 to 6.23.1.

---
updated-dependencies:
- 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

@@ -11,7 +11,7 @@ androidxMacroBenchmark = "1.2.0-beta05"
 androidxTest = "1.5.2"
 baselineProfiles = "1.3.1"
 uiAutomator = "2.3.0-alpha04"
-spotless = "6.21.0"
+spotless = "6.23.1"
 powerMenu = "2.2.4"
 timber = "5.0.1"
 junit = "1.1.5"