chore(deps): update dependency flaky to v3.7.0 (GoogleCloudPlatform#4263)

Author: renovate-bot

bigquery/bqml/requirements.txt

@@ -1,4 +1,4 @@
 pandas==1.0.5
 google-cloud-bigquery==1.25.0
-flaky==3.6.1
+flaky==3.7.0
 mock==4.0.2

container_registry/container_analysis/requirements.txt

@@ -3,5 +3,5 @@ google-cloud-containeranalysis==0.3.1
 grafeas==0.4.1
 pytest==5.3.0; python_version > "3.0"
 pytest==4.6.6; python_version < "3.0"
-flaky==3.6.1
+flaky==3.7.0
 mock==4.0.2

iot/api-client/manager/requirements.txt

@@ -1,5 +1,5 @@
 cryptography==2.9.2
-flaky==3.6.1
+flaky==3.7.0
 google-api-python-client==1.9.3
 google-auth-httplib2==0.0.3
 google-auth==1.18.0