fix(deps): require protobuf <4.0.0dev (#699)

Towards b/234444818

Author: parthea

setup.py

@@ -34,8 +34,9 @@
  # Until this issue is closed
  # https://github.com/googleapis/google-cloud-python/issues/10566
  "google-api-core[grpc] >= 1.31.5, <3.0.0dev,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.0",
- "proto-plus >= 1.15.0",
- "grpc-google-iam-v1 >= 0.12.3, < 0.13dev",
+ "proto-plus >= 1.15.0, <2.0.0dev",
+ "protobuf >= 3.19.0, <4.0.0dev",
+ "grpc-google-iam-v1 >=0.12.4, <1.0.0dev",
  "grpcio-status >= 1.16.0",
 ]
 extras = {"libcst": "libcst >= 0.3.10"}

testing/constraints-3.6.txt

@@ -8,4 +8,5 @@ grpcio==1.38.1
 google-api-core==1.31.5
 libcst==0.3.10
 proto-plus==1.15.0
-grpc-google-iam-v1==0.12.3
+grpc-google-iam-v1==0.12.4
+protobuf==3.19.0