Recently I added the Julia support to an interesting github action: https://github.com/benchmark-action/github-action-benchmark Hope it might be useful to some other package developers.
You can find how to enable the workflow here:
https://github.com/benchmark-action/github-action-benchmark/blob/master/.github/workflows/julia.yml
with the example code https://github.com/benchmark-action/github-action-benchmark/blob/master/examples/julia/README.md
You may also find a typical generated html page here: Benchmarks