update sample to use new versions (#702)

flutter_maps_firestore/ios/Podfile.lock

@@ -218,29 +218,28 @@ PODS:
   - BoringSSL-GRPC/Implementation (0.0.7):
     - BoringSSL-GRPC/Interface (= 0.0.7)
   - BoringSSL-GRPC/Interface (0.0.7)
-  - cloud_firestore (0.14.4):
-    - Firebase/CoreOnly (~> 6.33.0)
-    - Firebase/Firestore (~> 6.33.0)
+  - cloud_firestore (0.16.0):
+    - Firebase/Firestore (= 7.3.0)
     - firebase_core
     - Flutter
-  - Firebase/CoreOnly (6.33.0):
-    - FirebaseCore (= 6.10.3)
-  - Firebase/Firestore (6.33.0):
+  - Firebase/CoreOnly (7.3.0):
+    - FirebaseCore (= 7.3.0)
+  - Firebase/Firestore (7.3.0):
     - Firebase/CoreOnly
-    - FirebaseFirestore (~> 1.18.0)
-  - firebase_core (0.5.3):
-    - Firebase/CoreOnly (~> 6.33.0)
+    - FirebaseFirestore (~> 7.3.0)
+  - firebase_core (0.7.0):
+    - Firebase/CoreOnly (= 7.3.0)
     - Flutter
-  - FirebaseCore (6.10.3):
-    - FirebaseCoreDiagnostics (~> 1.6)
-    - GoogleUtilities/Environment (~> 6.7)
-    - GoogleUtilities/Logger (~> 6.7)
-  - FirebaseCoreDiagnostics (1.7.0):
-    - GoogleDataTransport (~> 7.4)
-    - GoogleUtilities/Environment (~> 6.7)
-    - GoogleUtilities/Logger (~> 6.7)
-    - nanopb (~> 1.30906.0)
-  - FirebaseFirestore (1.18.0):
+  - FirebaseCore (7.3.0):
+    - FirebaseCoreDiagnostics (~> 7.0)
+    - GoogleUtilities/Environment (~> 7.0)
+    - GoogleUtilities/Logger (~> 7.0)
+  - FirebaseCoreDiagnostics (7.3.0):
+    - GoogleDataTransport (~> 8.0)
+    - GoogleUtilities/Environment (~> 7.0)
+    - GoogleUtilities/Logger (~> 7.0)
+    - nanopb (~> 2.30906.0)
+  - FirebaseFirestore (7.3.0):
     - abseil/algorithm (= 0.20200225.0)
     - abseil/base (= 0.20200225.0)
     - abseil/memory (= 0.20200225.0)
@@ -248,24 +247,24 @@ PODS:
     - abseil/strings/strings (= 0.20200225.0)
     - abseil/time (= 0.20200225.0)
     - abseil/types (= 0.20200225.0)
-    - FirebaseCore (~> 6.10)
+    - FirebaseCore (~> 7.0)
     - "gRPC-C++ (~> 1.28.0)"
     - leveldb-library (~> 1.22)
-    - nanopb (~> 1.30906.0)
+    - nanopb (~> 2.30906.0)
   - Flutter (1.0.0)
   - google_maps_flutter (0.0.1):
     - Flutter
     - GoogleMaps (< 3.10)
-  - GoogleDataTransport (7.5.1):
-    - nanopb (~> 1.30906.0)
+  - GoogleDataTransport (8.1.0):
+    - nanopb (~> 2.30906.0)
   - GoogleMaps (3.9.0):
     - GoogleMaps/Maps (= 3.9.0)
   - GoogleMaps/Base (3.9.0)
   - GoogleMaps/Maps (3.9.0):
     - GoogleMaps/Base
-  - GoogleUtilities/Environment (6.7.2):
+  - GoogleUtilities/Environment (7.2.2):
     - PromisesObjC (~> 1.2)
-  - GoogleUtilities/Logger (6.7.2):
+  - GoogleUtilities/Logger (7.2.2):
     - GoogleUtilities/Environment
   - "gRPC-C++ (1.28.2)":
     - "gRPC-C++/Implementation (= 1.28.2)"
@@ -294,12 +293,12 @@ PODS:
   - leveldb-library (1.22)
   - location (0.0.1):
     - Flutter
-  - nanopb (1.30906.0):
-    - nanopb/decode (= 1.30906.0)
-    - nanopb/encode (= 1.30906.0)
-  - nanopb/decode (1.30906.0)
-  - nanopb/encode (1.30906.0)
-  - PromisesObjC (1.2.11)
+  - nanopb (2.30906.0):
+    - nanopb/decode (= 2.30906.0)
+    - nanopb/encode (= 2.30906.0)
+  - nanopb/decode (2.30906.0)
+  - nanopb/encode (2.30906.0)
+  - PromisesObjC (1.2.12)
 
 DEPENDENCIES:
   - cloud_firestore (from `.symlinks/plugins/cloud_firestore/ios`)
@@ -340,24 +339,24 @@ EXTERNAL SOURCES:
 SPEC CHECKSUMS:
   abseil: 6c8eb7892aefa08d929b39f9bb108e5367e3228f
   BoringSSL-GRPC: 8edf627ee524575e2f8d19d56f068b448eea3879
-  cloud_firestore: b8c0e15fa49dfff87c2817d288b577e5dca2df13
-  Firebase: 8db6f2d1b2c5e2984efba4949a145875a8f65fe5
-  firebase_core: 5d6a02f3d85acd5f8321c2d6d62877626a670659
-  FirebaseCore: d889d9e12535b7f36ac8bfbf1713a0836a3012cd
-  FirebaseCoreDiagnostics: 770ac5958e1372ce67959ae4b4f31d8e127c3ac1
-  FirebaseFirestore: adff4877869ca91a11250cc0989a6cd56bad163f
-  Flutter: 0e3d915762c693b495b44d77113d4970485de6ec
+  cloud_firestore: 433cf1aece50c727965355ae00e8dbeeceae66b1
+  Firebase: 26223c695fe322633274198cb19dca8cb7e54416
+  firebase_core: 91b27774a52f41f8b58484a75edf71197ac01c59
+  FirebaseCore: 4d3c72622ce0e2106aaa07bb4b2935ba2c370972
+  FirebaseCoreDiagnostics: d50e11039e5984d92c8a512be2395f13df747350
+  FirebaseFirestore: 1906bf163afdb7c432d2e3b5c40ceb9dd2df5820
+  Flutter: 434fef37c0980e73bb6479ef766c45957d4b510c
   google_maps_flutter: c7f9c73576de1fbe152a227bfd6e6c4ae8088619
-  GoogleDataTransport: f56af7caa4ed338dc8e138a5d7c5973e66440833
+  GoogleDataTransport: 116c84c4bdeb76be2a7a46de51244368f9794eab
   GoogleMaps: 4b5346bddfe6911bb89155d43c903020170523ac
-  GoogleUtilities: 7f2f5a07f888cdb145101d6042bc4422f57e70b3
+  GoogleUtilities: 31c5b01f978a70c6cff2afc6272b3f1921614b43
   "gRPC-C++": 13d8ccef97d5c3c441b7e3c529ef28ebee86fad2
   gRPC-Core: 4afa11bfbedf7cdecd04de535a9e046893404ed5
   leveldb-library: 55d93ee664b4007aac644a782d11da33fba316f7
   location: 3a2eed4dd2fab25e7b7baf2a9efefe82b512d740
-  nanopb: 59317e09cf1f1a0af72f12af412d54edf52603fc
-  PromisesObjC: 8c196f5a328c2cba3e74624585467a557dcb482f
+  nanopb: 1bf24dd71191072e120b83dd02d08f3da0d65e53
+  PromisesObjC: 3113f7f76903778cf4a0586bd1ab89329a0b7b97
 
-PODFILE CHECKSUM: aafe91acc616949ddb318b77800a7f51bffa2a4c
+PODFILE CHECKSUM: fe0e1ee7f3d1f7d00b11b474b62dd62134535aea
 
-COCOAPODS: 1.10.0
+COCOAPODS: 1.10.1