Bump com.diffplug.spotless:spotless-maven-plugin from 3.4.0 to 3.5.1

Bumps [com.diffplug.spotless:spotless-maven-plugin](https://github.com/diffplug/spotless) from 3.4.0 to 3.5.1.
- [Release notes](https://github.com/diffplug/spotless/releases)
- [Changelog](https://github.com/diffplug/spotless/blob/main/CHANGES.md)
- [Commits](diffplug/spotless@maven/3.4.0...maven/3.5.1)

---
updated-dependencies:
- dependency-name: com.diffplug.spotless:spotless-maven-plugin
  dependency-version: 3.5.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pom.xml

@@ -55,7 +55,7 @@
     <flatten-maven-plugin.version>1.7.3</flatten-maven-plugin.version>
     <git-build-hook-maven-plugin.version>3.6.0</git-build-hook-maven-plugin.version>
     <jacoco-maven-plugin.version>0.8.14</jacoco-maven-plugin.version>
-    <spotless-maven-plugin.version>3.4.0</spotless-maven-plugin.version>
+    <spotless-maven-plugin.version>3.5.1</spotless-maven-plugin.version>
     <spring-javaformat-maven-plugin.version>0.0.47</spring-javaformat-maven-plugin.version>
   </properties>