Bump com.diffplug.spotless:spotless-plugin-gradle from 7.2.1 to 8.0.0

Bumps [com.diffplug.spotless:spotless-plugin-gradle](https://github.com/diffplug/spotless) from 7.2.1 to 8.0.0.
- [Release notes](https://github.com/diffplug/spotless/releases)
- [Changelog](https://github.com/diffplug/spotless/blob/main/CHANGES.md)
- [Commits](diffplug/spotless@gradle/7.2.1...gradle/8.0.0)

---
updated-dependencies:
- dependency-name: com.diffplug.spotless:spotless-plugin-gradle
  dependency-version: 8.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -5,7 +5,7 @@ smithy = "1.61.0"
 jmh = "0.7.3"
 test-logger-plugin = "4.0.0"
 spotbugs = "6.0.22"
-spotless = "7.2.1"
+spotless = "8.0.0"
 smithy-gradle-plugins = "1.3.0"
 assertj = "3.27.6"
 jackson = "2.20.0"