Revert "Disable wasi-nn CI tests due to breakage (404'ing package repository). (#5028)" (#5045)

This reverts commit 4f8b94163c. The APT
repository for OpenVINO should be restored to its original state.

.github/workflows/main.yml

@@ -342,6 +342,21 @@ jobs:
       env:
         RUST_BACKTRACE: 1
 
+  # Build and test the wasi-nn module.
+  test_wasi_nn:
+    name: Test wasi-nn module
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: true
+      - uses: ./.github/actions/install-rust
+      - run: rustup target add wasm32-wasi
+      - uses: abrown/install-openvino-action@v3
+      - run: ./ci/run-wasi-nn-example.sh
+        env:
+          RUST_BACKTRACE: 1
+
   # Build and test the wasi-crypto module.
   test_wasi_crypto:
     name: Test wasi-crypto module