(v2.2.x): Bump org.apache.maven.plugins:maven-gpg-plugin (#832)

Bumps [org.apache.maven.plugins:maven-gpg-plugin](https://github.com/apache/maven-gpg-plugin) from 3.2.3 to 3.2.4.
- [Release notes](https://github.com/apache/maven-gpg-plugin/releases)
- [Commits](apache/maven-gpg-plugin@maven-gpg-plugin-3.2.3...maven-gpg-plugin-3.2.4)

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

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Author: dependabot[bot]

Diff for: pom.xml

@@ -357,7 +357,7 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-gpg-plugin</artifactId>
-                    <version>3.2.3</version>
+                    <version>3.2.4</version>
                 </plugin>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>