Bump org.apache.maven.plugins:maven-gpg-plugin from 3.2.7 to 3.2.8

Bumps [org.apache.maven.plugins:maven-gpg-plugin](https://github.com/apache/maven-gpg-plugin) from 3.2.7 to 3.2.8.
- [Release notes](https://github.com/apache/maven-gpg-plugin/releases)
- [Commits](apache/maven-gpg-plugin@maven-gpg-plugin-3.2.7...maven-gpg-plugin-3.2.8)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-gpg-plugin
  dependency-version: 3.2.8
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

bom/pom.xml

@@ -29,7 +29,7 @@
     </developers>
 
     <properties>
-        <gpg.plugin.version>3.2.7</gpg.plugin.version>
+        <gpg.plugin.version>3.2.8</gpg.plugin.version>
         <nexus.staging.plugin.version>1.7.0</nexus.staging.plugin.version>
         <jboss.releases.repo.url>https://repository.jboss.org/nexus/service/local/staging/deploy/maven2/
         </jboss.releases.repo.url>