test: fix berry roundtrip test on (#5022)
### Description
We were incorrectly using CRLF on Windows for the berry lockfile
fixtures. This PR configures git to always use `lf` for the berry
lockfile fixtures.
### Testing Instructions
- Checkout this branch on Windows
- `rm -r crates/turborepo-lockfiles/fixtures`
- `git restore crates/turborepo-lockfiles/fixtures`
- `cargo tr-test` now passes
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Co-authored-by: Chris Olszewski <Chris Olszewski>
