Bump org.apache.maven.plugins:maven-gpg-plugin

Bumps [org.apache.maven.plugins:maven-gpg-plugin](https://github.com/apache/maven-gpg-plugin) from 3.1.0 to 3.2.8.
- [Release notes](https://github.com/apache/maven-gpg-plugin/releases)
- [Commits](apache/maven-gpg-plugin@maven-gpg-plugin-3.1.0...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-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

plugins/maven/graphql-java-codegen-maven-plugin/pom.xml

@@ -69,7 +69,7 @@
         <version.maven-release-plugin>3.0.1</version.maven-release-plugin>
         <version.maven-build-helper-plugin>3.4.0</version.maven-build-helper-plugin>
         <version.maven-scm-provider-gitexe>2.0.0</version.maven-scm-provider-gitexe>
-        <version.maven-gpg-plugin>3.1.0</version.maven-gpg-plugin>
+        <version.maven-gpg-plugin>3.2.8</version.maven-gpg-plugin>
         <version.maven-shared-utils>3.4.2</version.maven-shared-utils>
 
         <version.graphql-java-codegen>5.10.1-SNAPSHOT</version.graphql-java-codegen>