Bump org.apache.maven.plugins:maven-gpg-plugin from 3.2.0 to 3.2.1

Bumps [org.apache.maven.plugins:maven-gpg-plugin](https://github.com/apache/maven-gpg-plugin) from 3.2.0 to 3.2.1.
- [Release notes](https://github.com/apache/maven-gpg-plugin/releases)
- [Commits](apache/maven-gpg-plugin@maven-gpg-plugin-3.2.0...maven-gpg-plugin-3.2.1)

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

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

pom.xml

@@ -24,7 +24,7 @@
     <version.clean.plugin>3.3.2</version.clean.plugin>
     <version.compiler.plugin>3.12.1</version.compiler.plugin>
     <version.resources.plugin>3.3.1</version.resources.plugin>
-    <version.gpg.plugin>3.2.0</version.gpg.plugin>
+    <version.gpg.plugin>3.2.1</version.gpg.plugin>
     <version.install.plugin>3.1.1</version.install.plugin>
     <version.jar.plugin>3.3.0</version.jar.plugin>
     <version.javadoc.plugin>3.6.3</version.javadoc.plugin>