I submitted the PR to enable bfloat16 in DNNL
BYOC(https://github.com/apache/tvm/pull/1). But the PR failed to be built
due to the version of the oneDNN in CI is limited to v2.2, which is a relative
old one. So I update the CI script to get and build the latest oneDNN release.
I had tested t
> CI tests your changes automatically so no worries there, I would prefer that
> we just upgrade the oneDNN version manually (and keep the version pinned)
> though instead of grabbing the latest (imagine that there is a breaking
> update, the Docker image build would just stop working one day)
