chore: Bump analyzer version to ^4.3.0 to remove the usage of deprecated feature (#9214)

Author: rrousselGit

packages/cloud_firestore_odm/cloud_firestore_odm_generator/lib/src/validator_generator.dart

@@ -36,7 +36,7 @@ bool isValidatorAnnotation(ElementAnnotation annotation) {
   final element = annotation.element;
   if (element == null || element is! ConstructorElement) return false;
 
-  return element.enclosingElement.allSupertypes.any((superType) {
+  return element.enclosingElement2.allSupertypes.any((superType) {
     return superType.element.name == 'Validator' &&
         superType.element.librarySource.uri.toString() ==
             'package:cloud_firestore_odm/src/validator.dart';

packages/cloud_firestore_odm/cloud_firestore_odm_generator/pubspec.yaml

@@ -8,7 +8,7 @@ environment:
   sdk: ">=2.16.0 <3.0.0"
 
 dependencies:
-  analyzer: ">=2.0.0 <5.0.0"
+  analyzer: ^4.3.0
   build: ^2.0.1
   build_config: ^1.0.0
   cloud_firestore_odm: ^1.0.0-dev.23