UPDATE. including base.py and blockfrost.py in mypy check

Author: daehan-koreapool

pyproject.toml

@@ -65,8 +65,6 @@ profile = "black"
 ignore_missing_imports = true
 python_version = 3.7
 exclude = [
-    '^pycardano/backend/base.py$',
-    '^pycardano/backend/blockfrost.py$',
     '^pycardano/cip/cip8.py$',
     '^pycardano/crypto/bech32.py$',
     '^pycardano/address.py$',