Merge pull request #386 from oddbit/fix/iOS-issue-0.19.4

Update example podfile in 0.19.4

Author: antonoddbit

example/ios/Podfile.lock

@@ -1,11 +1,11 @@
 PODS:
   - facebook_app_events (0.0.1):
-    - FBAudienceNetwork (= 6.15.0)
+    - FBAudienceNetwork (= 6.16)
     - FBSDKCoreKit (~> 17.0)
     - Flutter
   - FBAEMKit (17.0.0):
     - FBSDKCoreKit_Basics (= 17.0.0)
-  - FBAudienceNetwork (6.15.0)
+  - FBAudienceNetwork (6.16.0)
   - FBSDKCoreKit (17.0.0):
     - FBAEMKit (= 17.0.0)
     - FBSDKCoreKit_Basics (= 17.0.0)
@@ -30,9 +30,9 @@ EXTERNAL SOURCES:
     :path: Flutter
 
 SPEC CHECKSUMS:
-  facebook_app_events: c913b6757053494b19db1648a07ab755f0d3bf74
+  facebook_app_events: d791f99d78f74cde976edd378678566cb7bb4ab0
   FBAEMKit: 31a20c2d8744d8c57d3a5b7ae4e27b4fdd819193
-  FBAudienceNetwork: 6c560e4c68823ec5da1e84868544a8a246e0e201
+  FBAudienceNetwork: d1670939884e3a2e0ad98dca98d7e0c841417228
   FBSDKCoreKit: dac911b656816f8d0b06e5fa4bac60e89505bb3b
   FBSDKCoreKit_Basics: 92b7b7458d57091370b0b6cc197578874c3b4b16
   Flutter: e0871f40cf51350855a761d2e70bf5af5b9b5de7