Merge pull request #221 from pac4j/renovate/com.github.spotbugs-spotbugs-maven-plugin-4.x

chore(deps): update dependency com.github.spotbugs:spotbugs-maven-plugin to v4.9.8.4

Author: renovate[bot]

pom.xml

@@ -141,7 +141,7 @@
             <plugin>
                 <groupId>com.github.spotbugs</groupId>
                 <artifactId>spotbugs-maven-plugin</artifactId>
-                <version>4.9.8.3</version>
+                <version>4.9.8.4</version>
                 <configuration>
                     <effort>Low</effort>
                     <threshold>Max</threshold>