Add explicit javax.annotation

This avoids an exception with modern Java versions:

Exception in thread "main" com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: java.lang.NoClassDefFoundError: javax/annotation/Resource

pom.xml

@@ -446,5 +446,10 @@
       <version>6.8.21</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>javax.annotation</groupId>
+      <artifactId>javax.annotation-api</artifactId>
+      <version>1.3.2</version>
+    </dependency>
   </dependencies>
 </project>