Merge pull request #203 from rabbitmq/dependabot/maven/spotbugs.version-4.9.0

Bump spotbugs.version from 4.8.6 to 4.9.0

Author: acogoluegnes

pom.xml

@@ -76,7 +76,7 @@
     <spotless.version>2.44.2</spotless.version>
     <google-java-format.version>1.21.0</google-java-format.version>
     <spotbugs-maven-plugin.version>4.8.6.6</spotbugs-maven-plugin.version>
-    <spotbugs.version>4.8.6</spotbugs.version>
+    <spotbugs.version>4.9.0</spotbugs.version>
     <!-- for documentation -->
     <broker.version>4.0</broker.version>
     <!-- to sign artifacts when releasing -->