Dependency(deps): Bump spotless-maven-plugin from 2.22.6 to 2.22.8

Bumps [spotless-maven-plugin](https://github.com/diffplug/spotless) from 2.22.6 to 2.22.8.
- [Release notes](https://github.com/diffplug/spotless/releases)
- [Changelog](https://github.com/diffplug/spotless/blob/main/CHANGES.md)
- [Commits](https://github.com/diffplug/spotless/compare/maven/2.22.6...maven/2.22.8)

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

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

pom.xml

@@ -83,7 +83,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.compiler.source>17</maven.compiler.source>
         <maven.compiler.target>17</maven.compiler.target>
-        <spotless.version>2.22.6</spotless.version>
+        <spotless.version>2.22.8</spotless.version>
         <slf4j.version>1.7.36</slf4j.version>
         <!-- The Revision of JPlag -->
         <revision>4.0.0-SNAPSHOT</revision>