Bump jacoco-maven-plugin from 0.8.8 to 0.8.9 in /keycloak-plugins

Bumps [jacoco-maven-plugin](https://github.com/jacoco/jacoco) from 0.8.8 to 0.8.9.
- [Release notes](https://github.com/jacoco/jacoco/releases)
- [Commits](jacoco/jacoco@v0.8.8...v0.8.9)

---
updated-dependencies:
- dependency-name: org.jacoco:jacoco-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

keycloak-plugins/pom.xml

@@ -542,7 +542,7 @@
             <plugin>
                 <groupId>org.jacoco</groupId>
                 <artifactId>jacoco-maven-plugin</artifactId>
-                <version>0.8.8</version>
+                <version>0.8.9</version>
                 <configuration>
                     <excludes>
                         <exclude>**/models/**</exclude>