📌 Add Flutter constraint

AlexV525 · AlexV525 · commit 3fe88e37e26d · 2023-02-26T10:40:53.000+08:00
diff --git a/pubspec.yaml b/pubspec.yaml
@@ -6,6 +6,7 @@ repository: https://github.com/AstroxNetwork/flutter_secp256r1
 
 environment:
   sdk: '>=2.13.0 <3.0.0'
+  flutter: '>=2.0.0'
 
 dependencies:
   flutter:
