Bump com.diffplug.spotless:spotless-maven-plugin from 3.0.0 to 3.1.0

Bumps [com.diffplug.spotless:spotless-maven-plugin](https://github.com/diffplug/spotless) from 3.0.0 to 3.1.0.
- [Release notes](https://github.com/diffplug/spotless/releases)
- [Changelog](https://github.com/diffplug/spotless/blob/main/CHANGES.md)
- [Commits](diffplug/spotless@lib/3.0.0...lib/3.1.0)

---
updated-dependencies:
- dependency-name: com.diffplug.spotless:spotless-maven-plugin
  dependency-version: 3.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -347,7 +347,7 @@ limitations under the License.
 
     <project.build.outputTimestamp>2025-10-11T11:22:53Z</project.build.outputTimestamp>
     <gpg.useagent>true</gpg.useagent>
-    <spotless-maven-plugin.version>3.0.0</spotless-maven-plugin.version>
+    <spotless-maven-plugin.version>3.1.0</spotless-maven-plugin.version>
     <mavenPluginToolsVersion>3.15.2</mavenPluginToolsVersion>
     <mavenFluidoSkinVersion>2.1.0</mavenFluidoSkinVersion>
     <mavenSurefireVersion>3.5.4</mavenSurefireVersion>