fix: move e2e to use bash to match other jobs (#6474)
### Description
I realized I forgot to move e2e to use bash instead of powershell as I
did with the other windows jobs in #6449
This is causing the network failures on PRs e.g.
https://github.com/vercel/turbo/actions/runs/6885178823/job/18729263113?pr=6473#step:4:24
### Testing Instructions
e2e windows tests should pass on this PR
Closes TURBO-1683
Co-authored-by: Chris Olszewski <Chris Olszewski>
