deps: update App Engine SDK to 1.9.65, animal-sniffer to 1.16 (#1364)

* sync and update App Engine SDK version

* update animal-sniffer for Java 9 compatibility

* try sniffer 1.16

* try 1.9.65

pom.xml

@@ -313,7 +313,7 @@
         <plugin>
           <groupId>org.codehaus.mojo</groupId>
           <artifactId>animal-sniffer-maven-plugin</artifactId>
-          <version>1.9</version>
+          <version>1.16</version>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
@@ -501,7 +501,7 @@
     <project.jackson-core2.version>2.9.8</project.jackson-core2.version>
     <project.protobuf-java.version>3.9.1</project.protobuf-java.version>
     <project.guava.version>28.0-android</project.guava.version>
-    <project.appengine.version>1.9.64</project.appengine.version>
+    <project.appengine.version>1.9.65</project.appengine.version>
     <project.xpp3.version>1.1.4c</project.xpp3.version>
     <project.httpclient.version>4.5.9</project.httpclient.version>
     <project.httpcore.version>4.4.11</project.httpcore.version>