fix(deps): allow protobuf 3.19.5 (#522)

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

Author: parthea

setup.py

@@ -26,7 +26,7 @@
 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 = {
  "pandas": ["pandas>=0.21.1"],

testing/constraints-3.7.txt

@@ -11,4 +11,4 @@ libcst==0.2.5
 fastavro==0.21.2
 pandas==1.0.5
 pyarrow==0.15.0
-protobuf==3.20.2
+protobuf==3.19.5