After moving nightly builds to GitHub releases,
the major contributor to AWS cost is now the S3 data
transfer charges.
This PR only addresses the data transfer costs incurred
due to the download of gstreamer dependency in the
linux and the Windows dependencies (llvm, cmake, moztools,
openssl etc) for MSVC builds. Android dependencies and
UWP/Hololens dependencies will continue to be served
from S3. These can be moved to GH as well in a future PR.
Signed-off-by: Mukilan Thiyagarajan <me@mukilan.in>
