deps(maven): bump spotless-maven-plugin from 2.17.4 to 2.17.6

Bumps [spotless-maven-plugin](https://github.com/diffplug/spotless) from 2.17.4 to 2.17.6.
- [Release notes](https://github.com/diffplug/spotless/releases)
- [Changelog](https://github.com/diffplug/spotless/blob/main/CHANGES.md)
- [Commits](diffplug/spotless@maven/2.17.4...maven/2.17.6)

---
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>

parent/pom.xml

@@ -135,7 +135,7 @@
     <plugin.version.sonar>3.9.1.2184</plugin.version.sonar>
     <plugin.version.sortpom>3.0.0</plugin.version.sortpom>
     <plugin.version.spotbugs>4.5.0.0</plugin.version.spotbugs>
-    <plugin.version.spotless>2.17.4</plugin.version.spotless>
+    <plugin.version.spotless>2.17.6</plugin.version.spotless>
     <plugin.version.surefire>3.0.0-M5</plugin.version.surefire>
     <plugin.version.versions>2.8.1</plugin.version.versions>