build(deps): bump third_party/liteeth from 117fb37 to d607d9f (f4…

…pga#3244)

Bumps [third_party/liteeth](https://github.com/enjoy-digital/liteeth) from `117fb37` to `d607d9f`.
- [Commits](enjoy-digital/liteeth@117fb37...d607d9f)

---
updated-dependencies:
- dependency-name: third_party/liteeth
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>