Bump com.diffplug.spotless:spotless-maven-plugin from 3.3.0 to 3.4.0 (#1783)

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>