ci: trigger alisql-docker build on release publish

[p1p1bear]

On every published release whose tag starts with AliSQL-8.0.*,
push the same tag to p1p1bear/alisql-docker so its existing
build workflow can build and push the multi-arch Docker image
to Docker Hub (songhuaxiong/alisql).

Requires repo secret DOCKER_REPO_PAT (fine-grained PAT with
Contents: read/write on p1p1bear/alisql-docker).

[CLAassistant]

All committers have signed the CLA.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}