OS: Linux, distribution: Debian (buster)

Currently, we using nginx:1.14.2, and to support Lua we are using libnginx-mod-http-lua:1.14.2 package.

We are working on upgrading Nginx to nginx:1.21.0 version, but I'm unable to find the compatible libnginx-mod-http-lua package. Can someone please help me to find compatible version.

The only alternate way I'm able to find is using lua-nginx-module (https://github.com/openresty/lua-nginx-module) (it recommend to directly use openresty). Is there no other way to resolve this?