Merge pull request #3379 from rabbitmq/use-rabbitmq-ct-helpers-master

Use master branch of rabbitmq-ct-helpers and rabbitmq-ct-client-helpers

Author: HoloRin

WORKSPACE.bazel

@@ -46,7 +46,7 @@ rabbitmq_external_deps(rabbitmq_workspace = "@")
 
 git_repository(
     name = "rabbitmq_ct_helpers",
-    branch = "v3.9.x",
+    branch = "master",
     remote = "https://github.com/rabbitmq/rabbitmq-ct-helpers.git",
     repo_mapping = {
         "@rabbitmq-server": "@",
@@ -55,7 +55,7 @@ git_repository(
 
 git_repository(
     name = "rabbitmq_ct_client_helpers",
-    branch = "v3.9.x",
+    branch = "master",
     remote = "https://github.com/rabbitmq/rabbitmq-ct-client-helpers.git",
     repo_mapping = {
         "@rabbitmq-server": "@",