chore(release/0.8): cherry-pick CI features/fixes

[vdice]

@thomastaylor312 and @bacongobbler, does the following look like the right approach towards the goal of backporting some CI improvements/fixes into a v0.8.x release (would be v0.8.2 as of writing)?

Ref #325

It incorporates both the linux-aarch64 build support and the blob-store action bump/fix. I ran the following:

git checkout release/0.8

# cherry-pick the linux-aarch64 commit
git cherry-pick f7e31ccc5587c7444ef73bba702ec082f37cf345

# cherry-pick the azure-blob-store bump
git cherry-pick a5ba2c91cbfd7e1099c432cd4ae6c9e88b32f94a

edit: also added this change to pass CI: 05d7a25 ; ref #359 (comment)

If so, then I suppose we'd merge this into release/0.8 and then tag/push v0.8.2 from HEAD of this branch?

[thomastaylor312]

Yeah, this is looking all ok to me once we can get tests passing

[thomastaylor312]

The one failure is an easy fix. See this commit: f026e9a

Probably shouldn't cherry pick it as it has lock changes as well