deps: bump com.diffplug.spotless:spotless-maven-plugin

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] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -66,7 +66,7 @@
         <mockito.version>5.20.0</mockito.version>
 
         <!-- plugin versions -->
-        <spotless.version>3.0.0</spotless.version>
+        <spotless.version>3.1.0</spotless.version>
         <palantir-format.version>2.39.0</palantir-format.version>
         <surefire.version>3.5.4</surefire.version>
         <maven-site-plugin.version>4.0.0-M13</maven-site-plugin.version>