build: use the reusable pr-automerge-open-release workflow
build: use the reusable pr-automerge-open-release workflow

angelapper/edx-platform,eduNEXT/edx-platform,angelapper/edx-platform,arbrandes/edx-platform,eduNEXT/edx-platform,angelapper/edx-platform,arbrandes/edx-platform,eduNEXT/edx-platform,eduNEXT/edx-platform,arbrandes/edx-platform,angelapper/edx-platform,arbrandes/edx-platform