build: switch to Camunda community parent pom (#242)

pom.xml

@@ -9,10 +9,9 @@
     <packaging>pom</packaging>
 
     <parent>
-        <groupId>org.camunda</groupId>
-        <artifactId>camunda-release-parent</artifactId>
-        <version>3.9.1</version>
-        <!-- do not remove empty tag - http://jira.codehaus.org/browse/MNG-4687 -->
+        <groupId>org.camunda.community</groupId>
+        <artifactId>community-hub-release-parent</artifactId>
+        <version>1.4.1</version>
         <relativePath/>
     </parent>
 
@@ -145,10 +144,11 @@
             </plugin>
 
             <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
+                <version>3.5.0</version>
                 <configuration>
-                    <!-- Override java source version to workaround javadoc bug https://bugs.openjdk.java.net/browse/JDK-8212233 -->
-                    <source>8</source>
+                    <source>${version.java}</source>
                 </configuration>
             </plugin>
         </plugins>
@@ -160,6 +160,16 @@
                     <artifactId>nexus-staging-maven-plugin</artifactId>
                     <version>1.6.13</version>
                 </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-site-plugin</artifactId>
+                    <version>3.12.1</version>
+                </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-project-info-reports-plugin</artifactId>
+                    <version>3.4.2</version>
+                </plugin>
             </plugins>
         </pluginManagement>
     </build>