Bump version.org.wildfly.galleon-plugins from 6.4.7.Final to 6.4.8.Final

Bumps `version.org.wildfly.galleon-plugins` from 6.4.7.Final to 6.4.8.Final.

Updates `org.wildfly.galleon-plugins:wildfly-galleon-plugins` from 6.4.7.Final to 6.4.8.Final

Updates `org.wildfly.galleon-plugins:wildfly-config-gen` from 6.4.7.Final to 6.4.8.Final

Updates `org.wildfly.galleon-plugins:wildfly-galleon-maven-plugin` from 6.4.7.Final to 6.4.8.Final

---
updated-dependencies:
- dependency-name: org.wildfly.galleon-plugins:wildfly-galleon-plugins
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.wildfly.galleon-plugins:wildfly-config-gen
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.wildfly.galleon-plugins:wildfly-galleon-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -48,7 +48,7 @@
         <!-- Plugins versions -->
         <version.javadoc.plugin>3.3.1</version.javadoc.plugin>
         <version.org.jacoco.plugin>0.8.11</version.org.jacoco.plugin>
-        <version.org.wildfly.galleon-plugins>6.4.7.Final</version.org.wildfly.galleon-plugins>
+        <version.org.wildfly.galleon-plugins>6.4.8.Final</version.org.wildfly.galleon-plugins>
         <version.org.wildfly.plugins.wildfly-maven-plugin>4.2.0.Final</version.org.wildfly.plugins.wildfly-maven-plugin>
 
         <!-- Test options -->