Merge pull request #689 from jetty-project/dependabot/maven/2.0.x/org.apache.maven.plugins-maven-gpg-plugin-3.2.8

Author: dependabot[bot]

pom.xml

@@ -210,7 +210,7 @@
         </plugin>
         <plugin>
           <artifactId>maven-gpg-plugin</artifactId>
-          <version>3.2.7</version>
+          <version>3.2.8</version>
         </plugin>
         <plugin>
           <artifactId>maven-install-plugin</artifactId>