Update dependency org.apache.maven.plugins:maven-gpg-plugin to v3.2.8

Author: renovate[bot]

prometheus-metrics-parent/pom.xml

@@ -98,7 +98,7 @@
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-gpg-plugin</artifactId>
-            <version>3.2.7</version>
+            <version>3.2.8</version>
             <executions>
               <execution>
                 <id>sign-artifacts</id>