Cancel branches starting with "codex/" it's crazy pushing refs.

Author: sobomax

.github/workflows/rtpproxy_ci.yml

@@ -18,7 +18,7 @@ permissions:
 # Cancels previous runs of this workflow for the same PR
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' || startsWith(github.ref_name, 'codex/') }}
 
 jobs:
   LoadJobs_conf: