Migrate from self-hosted hyp-ci-linux-arm64 to besu-arm64 runner

[Simon Dudley]

For arm docker builds we currently target the self-hosted hyp-ci-linux-arm64 but now there is a github provided runner enabled

[Ry Jones]

The runner name is besu-arm64

[Simon Dudley]

#7054 had to be reverted (in #7087) so this issue still needs replaying.

@seanyoung latest comment:

Actually it needed:

 sudo usermod -aG docker $USER
 sudo apt-get install acl
 sudo setfacl --modify user:$USER:rw /var/run/docker.sock

However I take your point that it's hard to test.

I understand that in June the arm64 runners will be public, so let's try again at that point.

Also at point hopefully it should come with docker installed so with any luck it will be plain sailing.