Fixup Github workflow file

Probably a cumulative commit, to wait on the remote, again, and again,
and probably again, again.

.github/workflows/ci.yml

@@ -47,12 +47,14 @@ jobs:
           cargo test
 
   uring_task:
-    container:
+    runs-on: ubuntu-latest
       image: rust:1.41.0-alpine3.11
-    allow_failures: true
-    uring_script:
-      - cd ethox-io-uring
-      - cargo test
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@nightly
+      - run: |
+          cd ethox-io-uring
+          cargo test
 
   nightly_task:
     runs-on: ubuntu-latest