Change BEEKEEPER_BRANCH to test-dynamic-port

Author: akrem-chabchoub

.github/workflows/beekeeper.yml

@@ -20,7 +20,7 @@ env:
   SETUP_CONTRACT_IMAGE: "ethersphere/bee-localchain"
   SETUP_CONTRACT_IMAGE_TAG: "0.9.4"
   BEELOCAL_BRANCH: "dynamic-registry-port"
-  BEEKEEPER_BRANCH: "master"
+  BEEKEEPER_BRANCH: "test-dynamic-port"
   BEEKEEPER_METRICS_ENABLED: false
   REACHABILITY_OVERRIDE_PUBLIC: true
   BATCHFACTOR_OVERRIDE_PUBLIC: 2