2501: Fix armv7 build by manually downloading crates.io index r=mergify[bot] a=ghostwheel42
## What type of PR?
bug-fix
## What does this PR do?
cargo fails with oom when download crates.io index.
this circumvents the problem by cloning crates.io index manually
Co-authored-by: Alexander Graf <ghostwheel42@users.noreply.github.com>