Bump com.diffplug.spotless:spotless-maven-plugin from 3.3.0 to 3.4.0 (#193)

Bumps [com.diffplug.spotless:spotless-maven-plugin](https://github.com/diffplug/spotless) from 3.3.0 to 3.4.0.
- [Release notes](https://github.com/diffplug/spotless/releases)
- [Changelog](https://github.com/diffplug/spotless/blob/main/CHANGES.md)
- [Commits](diffplug/spotless@lib/3.3.0...maven/3.4.0)

---
updated-dependencies:
- dependency-name: com.diffplug.spotless:spotless-maven-plugin
  dependency-version: 3.4.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pom.xml

@@ -36,7 +36,7 @@
         <sonar.host.url>https://sonarcloud.io</sonar.host.url>
         <sonar.organization>loicgreffier</sonar.organization>
         <sonar.projectKey>loicgreffier_spring-boot-kafka-quickstarts</sonar.projectKey>
-        <spotless-maven-plugin.version>3.3.0</spotless-maven-plugin.version>
+        <spotless-maven-plugin.version>3.4.0</spotless-maven-plugin.version>
     </properties>
 
     <dependencies>