Update Firebase Versions

Change-Id: I4f294892ec3fcac175a567b5fecf6cf7715930a0

Author: samtstern

constants.gradle

@@ -8,12 +8,12 @@ project.ext {
     targetSdk = 27
     minSdk = 14
 
-    coreVersion = '15.0.2'          // firebase-core
-    authVersion = '15.1.0'          // firebase-auth
+    coreVersion = '16.0.0'          // firebase-core
+    authVersion = '16.0.1'          // firebase-auth
     playAuthVersion = '15.0.1'      // play-services-auth
-    rtdbVersion = '15.0.1'          // firebase-database
-    firestoreVersion = '16.0.0'     // firebase-firestore
-    storageVersion = '15.0.2'       // firebase-storage
+    rtdbVersion = '16.0.1'          // firebase-database
+    firestoreVersion = '17.0.1'     // firebase-firestore
+    storageVersion = '16.0.1'       // firebase-storage
 
     supportLibraryVersion = '27.1.1'
     architectureVersion = '1.1.1'