Merge pull request #833 from rabbitmq/dependabot/maven/spotbugs.version-4.9.6

Bump spotbugs.version from 4.9.5 to 4.9.6

Author: michaelklishin

pom.xml

@@ -96,7 +96,7 @@
     <google-java-format.version>1.28.0</google-java-format.version>
     <jacoco.version>0.8.13</jacoco.version>
     <spotbugs-maven-plugin.version>4.9.6.0</spotbugs-maven-plugin.version>
-    <spotbugs.version>4.9.5</spotbugs.version>
+    <spotbugs.version>4.9.6</spotbugs.version>
     <!-- for documentation -->
     <broker.version>4.1</broker.version>
     <!-- to sign artifacts when releasing -->