Update pubspec.yaml

Author: mrtnetwork

pubspec.yaml

@@ -5,13 +5,13 @@ homepage: "https://github.com/mrtnetwork/bitcoin_base"
 repository: "https://github.com/mrtnetwork/bitcoin_base"
 environment:
   sdk: '>=3.0.6 <4.0.0'
-publish_to: none
+
 dependencies:
   pointycastle: ^3.7.3
   convert: ^3.1.1
   typed_data: ^1.3.2
   http: ^1.1.0
-  blockchain_utils: ^0.1.0
+  blockchain_utils: ^0.2.0
 
 dev_dependencies:
   test: ^1.24.6