Bump Maven plugins to latest versions

Author: chadlwilson

pom.xml

@@ -187,17 +187,12 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-surefire-plugin</artifactId>
-        <version>3.3.1</version>
-      </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-help-plugin</artifactId>
-        <version>3.4.1</version>
+        <version>3.5.2</version>
       </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-dependency-plugin</artifactId>
-        <version>3.7.1</version>
+        <version>3.8.1</version>
         <executions>
           <execution>
             <phase>process-sources</phase>
@@ -215,7 +210,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-deploy-plugin</artifactId>
-        <version>2.8.2</version>
+        <version>3.1.3</version>
       </plugin>
       <plugin>
         <groupId>org.jruby.maven</groupId>
@@ -265,7 +260,7 @@
       <plugin>
         <groupId>org.sonatype.plugins</groupId>
         <artifactId>nexus-staging-maven-plugin</artifactId>
-        <version>1.6.13</version>
+        <version>1.7.0</version>
         <extensions>true</extensions>
         <configuration>
            <serverId>ossrh</serverId>
@@ -276,7 +271,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>versions-maven-plugin</artifactId>
-        <version>2.17.1</version>
+        <version>2.18.0</version>
       </plugin>
     </plugins>
   </build>
@@ -295,7 +290,7 @@
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-source-plugin</artifactId>
-            <version>2.4</version>
+            <version>3.3.1</version>
             <executions>
               <execution>
                 <id>attach-sources</id>
@@ -308,7 +303,7 @@
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-javadoc-plugin</artifactId>
-            <version>3.7.0</version>
+            <version>3.11.1</version>
             <executions>
               <execution>
                 <id>attach-javadocs</id>
@@ -324,7 +319,7 @@
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-gpg-plugin</artifactId>
-            <version>1.5</version>
+            <version>3.2.7</version>
             <executions>
               <execution>
                 <id>sign-artifacts</id>