Bump com.diffplug.spotless:spotless-plugin-gradle from 8.0.0 to 8.1.0 (#68)

Bumps [com.diffplug.spotless:spotless-plugin-gradle](https://github.com/diffplug/spotless) from 8.0.0 to 8.1.0.
- [Release notes](https://github.com/diffplug/spotless/releases)
- [Changelog](https://github.com/diffplug/spotless/blob/main/CHANGES.md)
- [Commits](diffplug/spotless@gradle/8.0.0...gradle/8.1.0)

---
updated-dependencies:
- dependency-name: com.diffplug.spotless:spotless-plugin-gradle
  dependency-version: 8.1.0
  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]

build.gradle

@@ -34,7 +34,7 @@ buildscript {
     }
     dependencies {
         classpath "${opensearch_group}.gradle:build-tools:${opensearch_version}"
-        classpath "com.diffplug.spotless:spotless-plugin-gradle:8.0.0"
+        classpath "com.diffplug.spotless:spotless-plugin-gradle:8.1.0"
     }
 }