Bump com.diffplug.spotless:spotless-maven-plugin from 3.3.0 to 3.4.0

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
...

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

Author: dependabot[bot]

pom.xml

@@ -54,7 +54,7 @@
         <slf4j.version>2.0.17</slf4j.version>
         <javaparser.version>3.28.0</javaparser.version>
         <snakeyaml.version>2.6</snakeyaml.version>
-        <spotless-maven-plugin.version>3.3.0</spotless-maven-plugin.version>
+        <spotless-maven-plugin.version>3.4.0</spotless-maven-plugin.version>
         <!-- Run tests in Turkish to make sure that they don't depend on
                          locale. Turkish is a notoriously tricky locale. -->
         <surefire.argline>@{argLine} -Duser.language=TR -Duser.country=tr</surefire.argline>