Bump maven-gpg-plugin from 1.6 to 3.0.1

Bumps [maven-gpg-plugin](https://github.com/apache/maven-gpg-plugin) from 1.6 to 3.0.1.
- [Release notes](https://github.com/apache/maven-gpg-plugin/releases)
- [Commits](apache/maven-gpg-plugin@maven-gpg-plugin-1.6...maven-gpg-plugin-3.0.1)

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

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

Author: dependabot[bot]

pom.xml

@@ -78,7 +78,7 @@
     <maven.compiler.plugin.version>3.8.1</maven.compiler.plugin.version>
     <maven.surefire.plugin.version>2.22.2</maven.surefire.plugin.version>
     <maven.failsafe.plugin.version>2.22.2</maven.failsafe.plugin.version>
-    <maven.gpg.plugin.version>1.6</maven.gpg.plugin.version>
+    <maven.gpg.plugin.version>3.0.1</maven.gpg.plugin.version>
     <maven.jar.plugin.version>3.0.2</maven.jar.plugin.version>
     <maven.bundle.plugin.version>3.2.0</maven.bundle.plugin.version>
     <maven.packagecloud.wagon.version>0.0.6</maven.packagecloud.wagon.version>