Switch MSVC job to manual till we can upload deps cache
The deps cache job is failing:
https://gitlab.freedesktop.org/gstreamer/cerbero/-/jobs/4568410
Because of which MRs in other repos are unable to download the cache and are building everything from scratch, which is inflating CI times to 2 hours:
https://gitlab.freedesktop.org/marian/gst-plugins-bad/-/jobs/4567025