Merge pull request #434 from rabbitmq/dependabot/maven/com.diffplug.spotless-spotless-maven-plugin-2.40.0

Bump com.diffplug.spotless:spotless-maven-plugin from 2.39.0 to 2.40.0

Author: acogoluegnes

pom.xml

@@ -93,7 +93,7 @@
     <asciidoctorj.diagram.version>2.2.13</asciidoctorj.diagram.version>
     <buildnumber.plugin.version>1.4</buildnumber.plugin.version>
     <jmh.version>1.37</jmh.version>
-    <spotless.version>2.39.0</spotless.version>
+    <spotless.version>2.40.0</spotless.version>
     <google-java-format.version>1.17.0</google-java-format.version>
     <jacoco.version>0.8.10</jacoco.version>
     <!-- for documentation -->