build(deps): bump com.diffplug.spotless:spotless-maven-plugin

Bumps [com.diffplug.spotless:spotless-maven-plugin](https://github.com/diffplug/spotless) from 2.44.4 to 3.2.1.
- [Release notes](https://github.com/diffplug/spotless/releases)
- [Changelog](https://github.com/diffplug/spotless/blob/main/CHANGES.md)
- [Commits](diffplug/spotless@maven/2.44.4...maven/3.2.1)

---
updated-dependencies:
- dependency-name: com.diffplug.spotless:spotless-maven-plugin
  dependency-version: 3.2.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

pom.xml

@@ -57,7 +57,7 @@
     <pitest-junit5-plugin.version>1.1.2</pitest-junit5-plugin.version>
     <versions-maven-plugin.version>2.15.0</versions-maven-plugin.version>
     <maven-failsafe-plugin.version>3.5.3</maven-failsafe-plugin.version>
-    <spotless-maven-plugin.version>2.44.4</spotless-maven-plugin.version>
+    <spotless-maven-plugin.version>3.2.1</spotless-maven-plugin.version>
     <central-publishing-maven-plugin.version>0.9.0</central-publishing-maven-plugin.version>
   </properties>