chore(python): exclude grpcio==1.49.0rc1 in tests [autoapprove] (#432)

Source-Link: googleapis/synthtool@c4dd595
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:ce3c1686bc81145c81dd269bd12c4025c6b275b22d14641358827334fddb1d72

Author: gcf-owl-bot[bot]

packages/google-cloud-python-speech/noxfile.py

@@ -188,7 +188,9 @@ def unit(session):
 def install_systemtest_dependencies(session, *constraints):
 
     # Use pre-release gRPC for system tests.
-    session.install("--pre", "grpcio")
+    # Exclude version 1.49.0rc1 which has a known issue.
+    # See https://github.com/grpc/grpc/pull/30642
+    session.install("--pre", "grpcio!=1.49.0rc1")
 
     session.install(*SYSTEM_TEST_STANDARD_DEPENDENCIES, *constraints)
 
@@ -368,7 +370,8 @@ def prerelease_deps(session):
         # dependency of grpc
         "six",
         "googleapis-common-protos",
-        "grpcio",
+        # Exclude version 1.49.0rc1 which has a known issue. See https://github.com/grpc/grpc/pull/30642
+        "grpcio!=1.49.0rc1",
         "grpcio-status",
         "google-api-core",
         "proto-plus",