add cryptography and ecdsa packages dependencies

Author: tdejoigny-ledger

pyproject.toml

@@ -2,6 +2,8 @@
 requires = [
     "setuptools>=42",
     "wheel",
-    "protobuf>=3.19",
+    "protobuf==3.19",
+    "ecdsa",
+    "cryptography",
 ]
 build-backend = "setuptools.build_meta"

setup.cfg

@@ -20,7 +20,9 @@ packages = find:
 include_package_data = True
 python_requires = >=3.6
 install_requires=
-        protobuf>=3.19
+        protobuf==3.19
+        ecdsa
+        cryptography
 
 [options.packages.find]
 where=src