fix: use correct command for package managers (#6372)
### Description
Use actual package manager command instead of the name. This fixes the
Rust codepath for Yarn3+ and pnpm <7 (we would try to invoke `berry` and
`pnpm6` instead of `yarn` and `pnpm`)
### Testing Instructions
Attempt using Rust codepath with Yarn3 we now execute the correct
binary.
Closes TURBO-1590
Co-authored-by: Chris Olszewski <Chris Olszewski>
