Bump org.apache.maven.plugins:maven-gpg-plugin from 3.1.0 to 3.2.0

Bumps [org.apache.maven.plugins:maven-gpg-plugin](https://github.com/apache/maven-gpg-plugin) from 3.1.0 to 3.2.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/apache/maven-gpg-plugin/releases">org.apache.maven.plugins:maven-gpg-plugin's releases</a>.</em></p>
<blockquote>
<h2>3.2.0</h2>
<h1>Release Notes - Maven GPG Plugin - Version 3.2.0</h1>
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<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/4b23da86ebc38fb10a04e534c1043cf37e179304"><code>4b23da8</code></a> [maven-release-plugin] prepare release maven-gpg-plugin-3.2.0</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/56645dd7ba4c1538a55de91a27232d29c6f70873"><code>56645dd</code></a> Fix tag template</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/036dfe005c64a3f881f493806e854ead033c563d"><code>036dfe0</code></a> [MGPG-105] [MGPG-108] Make plugin backward compat and update site and doco (<a href="https://redirect.github.com/apache/maven-gpg-plugin/issues/77">#77</a>)</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/0771b610492f0818c38d137f771182f51ff28f98"><code>0771b61</code></a> [MGPG-110] SignAndDeployFileMojo validation is off (<a href="https://redirect.github.com/apache/maven-gpg-plugin/issues/78">#78</a>)</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/23b64f29dde787f35bafbe56da1e56567c45e798"><code>23b64f2</code></a> [MGPG-99] Make sure newline is added to input stream (<a href="https://redirect.github.com/apache/maven-gpg-plugin/issues/76">#76</a>)</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/9a73f900f6882c2037031b77b828900b6dff9a71"><code>9a73f90</code></a> [MGPG-105] Make possible backward compatibility (<a href="https://redirect.github.com/apache/maven-gpg-plugin/issues/74">#74</a>)</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/6a94f3a3da6671fb8b4f9e6b6abf5d3de8e57e4a"><code>6a94f3a</code></a> Bump apache/maven-gh-actions-shared from 3 to 4 (<a href="https://redirect.github.com/apache/maven-gpg-plugin/issues/75">#75</a>)</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/6f50819233cb368edba8335d7cb82edf2e7f2659"><code>6f50819</code></a> [MGPG-106] Introduce new signer: BC (<a href="https://redirect.github.com/apache/maven-gpg-plugin/issues/72">#72</a>)</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/ea35e2c0cf4b8183703e958cbd7af93e82382f6e"><code>ea35e2c</code></a> [MGPG-105] Stop propagating bad practices (<a href="https://redirect.github.com/apache/maven-gpg-plugin/issues/71">#71</a>)</li>
<li><a href="https://github.com/apache/maven-gpg-plugin/commit/6081ad4b94422d73ae90c8c8cc4eaa6ba99df5f5"><code>6081ad4</code></a> [MGPG-107] Settle on JUnit 5 (<a href="https://redirect.github.com/apache/maven-gpg-plugin/issues/70">#70</a>)</li>
<li>Additional commits viewable in <a href="https://github.com/apache/maven-gpg-plugin/compare/maven-gpg-plugin-3.1.0...maven-gpg-plugin-3.2.0">compare view</a></li>
</ul>
</details>
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</details>

Fixes #319

COPYBARA_INTEGRATE_REVIEW=#319 from google:dependabot/maven/org.apache.maven.plugins-maven-gpg-plugin-3.2.0 b9b9e2d
PiperOrigin-RevId: 615050648

pom.xml

@@ -187,7 +187,7 @@
         </plugin>
         <plugin>
           <artifactId>maven-gpg-plugin</artifactId>
-          <version>3.1.0</version>
+          <version>3.2.0</version>
         </plugin>
         <plugin>
           <artifactId>maven-surefire-plugin</artifactId>