1.21 series missing from Alpine 3.18 APKINDEX

[neomantra]

I was trying to release new Docker images based on Alpine 3.18 and the 1.21.x.x series.

It appears that all the 1.21 packages are missing from the APKINDEX:

$ curl  -s https://openresty.org/package/alpine/v3.18/main/aarch64/APKINDEX.tar.gz | tar xO APKINDEX | grep 1\.21
<nothing useful>

The package files themselves are in the OpenResty Alpine repo.

Here's the image build log:

• https://app.travis-ci.com/github/openresty/docker-openresty/jobs/632951085#L259