Bump com.diffplug.spotless:spotless-plugin-gradle from 7.1.0 to 7.2.1 (#3693)

Bumps [com.diffplug.spotless:spotless-plugin-gradle](https://github.com/diffplug/spotless) from 7.1.0 to 7.2.1.
- [Release notes](https://github.com/diffplug/spotless/releases)
- [Changelog](https://github.com/diffplug/spotless/blob/main/CHANGES.md)
- [Commits](diffplug/spotless@gradle/7.1.0...gradle/7.2.1)

---
updated-dependencies:
- dependency-name: com.diffplug.spotless:spotless-plugin-gradle
  dependency-version: 7.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -11,7 +11,7 @@ gradleplugin-test-logger = "4.0.0"
 gradleplugin-animal-sniffer = "2.0.1"
 gradleplugin-aQute-bnd = "7.1.0"
 gradleplugin-errorprone = "4.3.0"
-gradleplugin-spotless = "7.1.0"
+gradleplugin-spotless = "7.2.1"
 
 gradleplugin-android = "7.4.2"