Bump maven-gpg-plugin from 1.6 to 3.0.1 (#684)

Bumps [maven-gpg-plugin](https://github.com/apache/maven-gpg-plugin) from 1.6 to 3.0.1.
- [Release notes](https://github.com/apache/maven-gpg-plugin/releases)
- [Commits](https://github.com/apache/maven-gpg-plugin/compare/maven-gpg-plugin-1.6...maven-gpg-plugin-3.0.1)
Signed-off-by: Ndependabot[bot] <support@github.com>
Co-authored-by: Ndependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: NBogdan Kobylynskyi <92bogdan@gmail.com>

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

@@ -69,7 +69,7 @@
         <version.maven-release-plugin>2.5.3</version.maven-release-plugin>
         <version.maven-build-helper-plugin>3.2.0</version.maven-build-helper-plugin>
         <version.maven-scm-provider-gitexe>1.11.2</version.maven-scm-provider-gitexe>
-        <version.maven-gpg-plugin>1.6</version.maven-gpg-plugin>
+        <version.maven-gpg-plugin>3.0.1</version.maven-gpg-plugin>
         <version.maven-shared-utils>3.3.3</version.maven-shared-utils>
 
         <version.graphql-java-codegen>5.1.1-SNAPSHOT</version.graphql-java-codegen>