build(deps): bump third_party/liteeth from `a57178a` to `8f7a1bf` (#3278)

Bumps [third_party/liteeth](https://github.com/enjoy-digital/liteeth) from `a57178a` to `8f7a1bf`.
- [Commits](https://github.com/enjoy-digital/liteeth/compare/a57178ac265096f5caa7e1bf2bfee24a2ff54a3b...8f7a1bf5d4fca2c6b4159952be5ce6e7f9ed1814)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/third_party/liteeth b/third_party/liteeth
index a57178a..8f7a1bf 160000
--- a/third_party/liteeth
+++ b/third_party/liteeth
@@ -1 +1 @@
-Subproject commit a57178ac265096f5caa7e1bf2bfee24a2ff54a3b
+Subproject commit 8f7a1bf5d4fca2c6b4159952be5ce6e7f9ed1814