dependency updates

Author: rbri

README.md

@@ -61,7 +61,14 @@ Every contribution - from bug reports to feature requests, typos to full new fea
 This part is intended for committer who are packaging a release.
 
 * Check all your files are checked in
-* Execute "mvn -U clean test" to be sure all tests are passing
+* Execute these mvn commands to be sure all tests are passing and everything is up to data
+
+```
+   mvn versions:display-plugin-updates
+   mvn versions:display-dependency-updates
+   mvn -U clean test
+```
+
 * Update the version number in pom.xml and README.md
 * Commit the changes
 

pom.xml

@@ -385,7 +385,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>3.4.0</version>
+                <version>3.4.1</version>
                 <configuration>
                     <archive>
                         <manifest>
@@ -435,7 +435,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-gpg-plugin</artifactId>
-                <version>3.2.3</version>
+                <version>3.2.4</version>
                 <executions>
                     <execution>
                         <phase>verify</phase>