fix(deps): allow protobuf 3.19.5 (#444)

* fix(deps): allow protobuf 3.19.5 * explicitly exclude protobuf 4.21.0

Author: parthea

setup.py

@@ -24,7 +24,7 @@
 dependencies = [
  "google-api-core[grpc] >= 1.32.0, <3.0.0dev,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.*,!=2.4.*,!=2.5.*,!=2.6.*,!=2.7.*",
  "proto-plus >= 1.22.0, <2.0.0dev",
- "protobuf >= 3.20.2, <5.0.0dev",
+ "protobuf>=3.19.5,<5.0.0dev,!=3.20.0,!=3.20.1,!=4.21.0,!=4.21.1,!=4.21.2,!=4.21.3,!=4.21.4,!=4.21.5",
 ]
 extras = {
  "libcst": "libcst >= 0.2.5",

testing/constraints-3.7.txt

@@ -10,4 +10,4 @@ proto-plus==1.22.0
 libcst==0.2.5
 pandas==1.0.5
 google-cloud-storage==1.18.0
-protobuf==3.20.2
+protobuf==3.19.5