chore(deps): update dependency com.github.spotbugs:spotbugs-maven-plu…

…gin to v4.8.6.4

keycloak-plugins/pom.xml

@@ -55,7 +55,7 @@
         <properties-maven-plugin>1.1.0</properties-maven-plugin>
         <maven-compiler-plugin>3.11.0</maven-compiler-plugin>
         <maven-enforcer-plugin>3.2.1</maven-enforcer-plugin>
-        <spotbugs-maven-plugin>4.7.3.2</spotbugs-maven-plugin>
+        <spotbugs-maven-plugin>4.8.6.4</spotbugs-maven-plugin>
         <maven-pmd-plugin>3.20.0</maven-pmd-plugin>
         <fast-build>false</fast-build>