chore(deps): update dependency com.github.spotbugs:spotbugs-maven-plugin to v4

Author: renovatebot-confluentinc[bot]

pom.xml

@@ -355,7 +355,7 @@
                     <plugin>
                         <groupId>com.github.spotbugs</groupId>
                         <artifactId>spotbugs-maven-plugin</artifactId>
-                        <version>3.1.12</version>
+                        <version>4.8.6.5</version>
                         <configuration>
                             <effort>Max</effort>
                             <threshold>High</threshold>