Bump org.apache.maven.plugins:maven-gpg-plugin in /json-smart-action (#190)

Author: dependabot[bot]

json-smart-action/pom.xml

@@ -84,7 +84,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-gpg-plugin</artifactId>
-                        <version>3.1.0</version>
+                        <version>3.2.4</version>
                         <executions>
                             <execution>
                                 <id>sign-artifacts</id>