Bump com.github.spotbugs:spotbugs-maven-plugin from 4.8.6.3 to 4.8.6.4

Author: dependabot[bot]

pom.xml

@@ -185,7 +185,7 @@
       <plugin>
         <groupId>com.github.spotbugs</groupId>
         <artifactId>spotbugs-maven-plugin</artifactId>
-        <version>4.8.6.3</version>
+        <version>4.8.6.4</version>
       </plugin>
       <plugin>
         <groupId>org.codehaus.mojo</groupId>