Updated dependencies to make the build run on JDK9+ (#58)

* Updated dependencies to make the build run on JDK9+

* Version bumps for jar and assembly plugins and forbiddenapi

Author: Raibaz

google-ads/pom.xml

@@ -120,5 +120,13 @@
       <version>0.27</version>
       <scope>test</scope>
     </dependency>
+
+    <!-- Java EE Modules deprecated since JDK 9 -->
+    <dependency>
+      <groupId>javax.annotation</groupId>
+      <artifactId>javax.annotation-api</artifactId>
+      <version>1.3.2</version>
+    </dependency>
+
   </dependencies>
 </project>

pom.xml

@@ -84,7 +84,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-enforcer-plugin</artifactId>
-        <version>1.3.1</version>
+        <version>3.0.0-M2</version>
         <executions>
           <execution>
             <id>enforce-versions</id>
@@ -107,7 +107,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.3</version>
+        <version>3.8.0</version>
         <configuration>
           <source>1.8</source>
           <target>1.8</target>
@@ -121,7 +121,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-source-plugin</artifactId>
-        <version>2.1.2</version>
+        <version>3.0.1</version>
         <executions>
           <execution>
             <phase>package</phase>
@@ -134,26 +134,26 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-javadoc-plugin</artifactId>
-        <version>2.8</version>
+        <version>3.0.1</version>
         <configuration>
           <maxmemory>1024m</maxmemory>
           <reportOutputDirectory>.</reportOutputDirectory>
           <destDir>javadocs</destDir>
           <!-- Disable doclint. See http://blog.joda.org/2014/02/turning-off-doclint-in-jdk-8-javadoc.html -->
-          <additionalparam>-Xdoclint:none</additionalparam>
+          <doclint>none</doclint>
           <!-- Only show warnings and errors. -->
           <quiet>true</quiet>
         </configuration>
       </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-assembly-plugin</artifactId>
-        <version>2.6</version>
+        <version>3.1.1</version>
       </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-jar-plugin</artifactId>
-        <version>2.6</version>
+        <version>3.1.1</version>
       </plugin>
       <plugin>
         <!--
@@ -184,7 +184,7 @@
       <plugin>
         <groupId>de.thetaphi</groupId>
         <artifactId>forbiddenapis</artifactId>
-        <version>2.3</version>
+        <version>2.6</version>
         <configuration>
           <!--
             If the used Java version is too new, don't fail, just do nothing.