chore: fixed scan errors (#53)

Author: jerson

example/test/app_test.dart

@@ -3,7 +3,8 @@ import 'package:openpgp/openpgp.dart';
 
 void main() {
   test('Generate Keypair', () async {
-    var keyPair = await OpenPGP.generate(options: Options()..email="sample@sample.com");
+    var keyPair =
+        await OpenPGP.generate(options: Options()..email = "sample@sample.com");
     print(keyPair.privateKey);
     expect(keyPair.publicKey != "", true);
   });

pubspec.yaml

@@ -17,7 +17,7 @@ dependencies:
     sdk: flutter
   ffi: ^2.0.1
   flat_buffers: ^2.0.5
-  path: any
+  path: ^1.8.2
 
 dev_dependencies:
   flutter_test: