Update some plugins, add links to release notes

Author: UweTrottmann

pom.xml

@@ -106,6 +106,7 @@
 
     <build>
         <plugins>
+            <!-- https://github.com/apache/maven-enforcer/releases -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-enforcer-plugin</artifactId>
@@ -126,6 +127,7 @@
                     </execution>
                 </executions>
             </plugin>
+            <!-- https://github.com/apache/maven-compiler-plugin/releases -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
@@ -148,16 +150,19 @@
                     <tagNameFormat>v@{project.version}</tagNameFormat>
                 </configuration>
             </plugin>
+            <!-- https://github.com/apache/maven-surefire/releases -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
                 <version>3.3.1</version>
             </plugin>
+            <!-- https://github.com/mojohaus/versions/releases -->
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>versions-maven-plugin</artifactId>
-                <version>2.17.0</version>
+                <version>2.17.1</version>
             </plugin>
+            <!-- https://github.com/sonatype/nexus-maven-plugins/releases -->
             <plugin>
                 <groupId>org.sonatype.plugins</groupId>
                 <artifactId>nexus-staging-maven-plugin</artifactId>
@@ -177,10 +182,11 @@
             <id>release</id>
             <build>
                 <plugins>
+                    <!-- https://github.com/apache/maven-gpg-plugin/releases -->
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-gpg-plugin</artifactId>
-                        <version>3.2.4</version>
+                        <version>3.2.5</version>
                         <executions>
                             <execution>
                                 <id>sign-artifacts</id>
@@ -191,6 +197,7 @@
                             </execution>
                         </executions>
                     </plugin>
+                    <!-- https://github.com/apache/maven-javadoc-plugin/releases -->
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-javadoc-plugin</artifactId>
@@ -207,6 +214,7 @@
                             </execution>
                         </executions>
                     </plugin>
+                    <!-- https://github.com/apache/maven-source-plugin/releases -->
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-source-plugin</artifactId>