Non-blocking: api7/apisix-nginx-module has delete-branch-on-merge enabled, so as soon as api7/apisix-nginx-module#136 merges, support-openresty-1.31.8.1 is gone and the git clone -b in build-apisix-runtime.sh fails, which turns every later CI run here red until this line is bumped. Could we switch it to the release tag once #136 is tagged, or leave a tracking issue so it doesn't get lost? #26