Update package min flutter version

AliAbdelfattah · AliAbdelfattah · commit b89d44f2ae68 · 2021-07-12T16:35:56.000+02:00
diff --git a/pubspec.yaml b/pubspec.yaml
@@ -28,4 +28,4 @@ flutter:
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0 <3.0.0"
+  flutter: ">=1.17.0 <3.0.0"
