Pin msquic to pre-regression revision on Alpine Arm32 #933
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Contributes to dotnet/runtime#91757
While pinning to a docker tag temporarily mitigated the issue above, it doesn't allow us to consume any of the docker image updates, that are unrelated to msquic, e.g. see dotnet/dnceng#1423 (comment).
Changing it to pin to a pre-regression msquic revision instead of main, so we can "unlock" the image in runtime CI again.
cc @wfurt