Merge pull request #599 from pac4j/renovate/com.github.spotbugs-spotbugs-4.x

Update dependency com.github.spotbugs:spotbugs to v4.9.8

Author: renovate[bot]

pom.xml

@@ -272,7 +272,7 @@
           <dependency>
             <groupId>com.github.spotbugs</groupId>
             <artifactId>spotbugs</artifactId>
-            <version>4.9.7</version>
+            <version>4.9.8</version>
           </dependency>
         </dependencies>
       </plugin>