microsoft/openvmm

Commit

CI: Update mirror refresh script to update submodule in new staging branch (#720)

This change updates the script that invokes the mirror refresh pipeline
to use the new staging branch for the upcoming 2411 OpenHCL release.
This branch will be used to validate 2411 payload before being pulled
into the release branch.

Co-authored-by: Ben Hillis <benhill@ntdev.microsoft.com>