Bump com.diffplug.spotless:spotless-maven-plugin from 3.2.0 to 3.2.1

Bumps [com.diffplug.spotless:spotless-maven-plugin](https://github.com/diffplug/spotless) from 3.2.0 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@lib/3.2.0...maven/3.2.1)

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

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

Author: dependabot[bot]

pom.xml

@@ -19,7 +19,7 @@
 
     <!-- Plugin versions -->
     <surefire-plugin.version>3.5.4</surefire-plugin.version>
-    <spotless.version>3.2.0</spotless.version>
+    <spotless.version>3.2.1</spotless.version>
     <google-java-format.version>1.10.0</google-java-format.version>
     <jacoco.version>0.8.14</jacoco.version>
     <spotbugs.version>4.9.8.2</spotbugs.version>