chore(dependencies): Updated segment_analytics_plugin_firebase dependencies. (#115)

- Updates minimum supported SDK version to Flutter 3.16/Dart 3.2
- Updates firebase_analytics to 11.3.3.
- Updates firebase_core to 3.6.0.
fix: FirebaseAnalytics.instance.logEvent not accepting nullable values.

Co-authored-by: Rishabh Jain <risjain@twilio.com>

Author: Rjaintwilio

packages/plugins/plugin_firebase/lib/properties.dart

@@ -28,14 +28,18 @@ String sanitizeEventName(String eventName) {
   return eventName.replaceAll(RegExp(r'[^a-zA-Z0-9]'), '_');
 }
 
-Map<String, Object?> castParameterType(Map<String, Object?> properties) {
-  return properties.map((key, value) {
-    if (value is String || value is num || value == null) {
-      return MapEntry(key, value);
-    } else {
-      return MapEntry(key, value.toString());
+Map<String, Object> castParameterType(Map<String, Object?> properties) {
+  Map<String, Object> safeProperties = {};
+  properties.forEach((key, value) {
+    if (value != null) {
+      if (value is String || value is num) {
+        safeProperties[key] = value;
+      } else {
+        safeProperties[key] = value.toString();
+      }
     }
   });
+  return safeProperties;
 }
 
 @JsonSerializable()

packages/plugins/plugin_firebase/pubspec.yaml

@@ -6,21 +6,19 @@ repository: https://github.com/segmentio/analytics_flutter/tree/main/packages/pl
 issue_tracker: https://github.com/segmentio/analytics_flutter/issues
 
 environment:
-  sdk: '>=2.19.2 <4.0.0'
-  flutter: ">=1.17.0"
+  sdk: '>=3.2.0 <4.0.0'
+  flutter: ">=3.16.0"
 
 dependencies:
-  firebase_analytics: ^11.3.2
-  firebase_core: ^3.5.0
+  firebase_analytics: ^11.3.3
+  firebase_core: ^3.6.0
   flutter:
     sdk: flutter
   json_annotation: ^4.8.0
-  segment_analytics: ^1.0.0
+  segment_analytics: ^1.1.1
 
 dev_dependencies:
   build_runner: ^2.3.3
   flutter_test:
     sdk: flutter
-  flutter_lints: ^2.0.0
-
-flutter:
+  flutter_lints: ^4.0.0