Bump org.apache.maven.plugins:maven-gpg-plugin from 3.2.7 to 3.2.8

Bumps [org.apache.maven.plugins:maven-gpg-plugin](https://github.com/apache/maven-gpg-plugin) from 3.2.7 to 3.2.8.
- [Release notes](https://github.com/apache/maven-gpg-plugin/releases)
- [Commits](apache/maven-gpg-plugin@maven-gpg-plugin-3.2.7...maven-gpg-plugin-3.2.8)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-gpg-plugin
  dependency-version: 3.2.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pom.xml

@@ -59,7 +59,7 @@
     <maven.release.plugin.version>3.1.1</maven.release.plugin.version>
     <maven.sources.plugin.version>3.3.1</maven.sources.plugin.version>
     <maven.javadoc.plugin.version>3.11.2</maven.javadoc.plugin.version>
-    <maven.gpg.plugin.version>3.2.7</maven.gpg.plugin.version>
+    <maven.gpg.plugin.version>3.2.8</maven.gpg.plugin.version>
     <central-publishing-maven-plugin.version>0.8.0</central-publishing-maven-plugin.version>
     <checksum.maven.plugin.version>1.11</checksum.maven.plugin.version>
     <asciidoctor.maven.plugin.version>3.2.0</asciidoctor.maven.plugin.version>