chore: downgrade curl to fix Windows rust tests (#8242)
### Description
https://github.com/vercel/turbo/pull/8081 ended up breaking our Windows
builds specifically when trying to build the test binaries. e.g.
https://github.com/vercel/turbo/actions/runs/9187223596/job/25264529837#step:5:523
I'm still unsure of exactly why, but removing the `curl` and `tokio`
version bumps that happened in that PR get us back to a working build.
Future work might be to switch from the MingW backend we're currently
using to MSVC as that has better support and I believe we only needed to
use MingW to support linking to Go.
### Testing Instructions
Windows tests should now pass
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Co-authored-by: Chris Olszewski <Chris Olszewski>
