Bump maven-gpg-plugin from 3.0.1 to 3.1.0

Bumps [maven-gpg-plugin](https://github.com/apache/maven-gpg-plugin) from 3.0.1 to 3.1.0.
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/699e2ad61179ef661693f99d1d9c147e2f6bcd04"><code>699e2ad</code></a> [maven-release-plugin] prepare release maven-gpg-plugin-3.1.0</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/f314f8e879d6acbfe88386538f882ecedc9ad18a"><code>f314f8e</code></a> [MGPG-97] use gpgverify plugin to check dependencies signatures</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/bad6b5708c58e5e4d868e30509acc38f552982fd"><code>bad6b57</code></a> [MGPG-96] add INFO message</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/0498a82b6b6b67bf46d61e66e945c093365e63df"><code>0498a82</code></a> [MGPG-95] don't GPG-sign .sigstore signatures</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/09b5be93972ae0c95c741fc0f111a96f51119aa7"><code>09b5be9</code></a> Auto-link MGPG Jira</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/1e0472f2e59d037bdde38ccde38897e04d89e206"><code>1e0472f</code></a> extract FilesCollector</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/af9ccfdd3b12502f9da225a7b394c541a6b4088c"><code>af9ccfd</code></a> [MGPG-94] Ignore reformatting</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/5e51734d22f4541fcbf2d03aae24f7501b67abe1"><code>5e51734</code></a> [MGPG-94] Integration tests - convert and reformat bsh to groovy</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/955ea0ed5c2a7a3189159158e1fcb10e1ed2964e"><code>955ea0e</code></a> [MGPG-94] Reformat code</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/e160f4358ccde49da7f3c7339a33774a536db457"><code>e160f43</code></a> [MGPG-94] Bump maven-plugins from 36 to 39</li>
<li>Additional commits viewable in <a href="https://github.com/apache/maven-gpg-plugin/compare/maven-gpg-plugin-3.0.1...maven-gpg-plugin-3.1.0">compare view</a></li>
</ul>
</details>
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Fixes #1116

COPYBARA_INTEGRATE_REVIEW=#1116 from google:dependabot/maven/org.apache.maven.plugins-maven-gpg-plugin-3.1.0 af85578
PiperOrigin-RevId: 537022919

pom.xml

@@ -293,7 +293,7 @@
         </plugin>
         <plugin>
           <artifactId>maven-gpg-plugin</artifactId>
-          <version>3.0.1</version>
+          <version>3.1.0</version>
         </plugin>
         <plugin>
           <artifactId>maven-surefire-plugin</artifactId>