chore(example/deps): lock file maintenance example dependencies (#329)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

example/pubspec.lock

@@ -85,10 +85,10 @@ packages:
     dependency: transitive
     description:
       name: ffi
-      sha256: "7bf0adc28a23d395f19f3f1eb21dd7cfd1dd9f8e1c50051c069122e6853bc878"
+      sha256: "493f37e7df1804778ff3a53bd691d8692ddf69702cf4c1c1096a2e41b4779e21"
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.2"
   file:
     dependency: transitive
     description:
@@ -127,7 +127,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "2.11.4"
+    version: "2.12.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -392,10 +392,10 @@ packages:
     dependency: transitive
     description:
       name: web
-      sha256: afe077240a270dcfd2aafe77602b4113645af95d0ad31128cc02bce5ac5d5152
+      sha256: "4188706108906f002b3a293509234588823c8c979dc83304e229ff400c996b05"
       url: "https://pub.dev"
     source: hosted
-    version: "0.3.0"
+    version: "0.4.2"
   win32:
     dependency: transitive
     description:
@@ -414,4 +414,4 @@ packages:
     version: "1.0.4"
 sdks:
   dart: ">=3.3.0 <4.0.0"
-  flutter: ">=3.16.9"
+  flutter: ">=3.19.0"

example/pubspec.yaml

@@ -21,8 +21,8 @@ environment:
   sdk: ">=3.3.0 <4.0.0"
 
 dependencies:
-  cloud_firestore: ^4.15.3
-  firebase_core: ^2.25.3
+  cloud_firestore: ^4.15.4
+  firebase_core: ^2.25.4
   firestore_cache:
     path: ../
   flutter: