ci: check: also run cargo test

We now have our first set of tests thanks to the MAC address generation.

Signed-off-by: Leonard Göhrs <l.goehrs@pengutronix.de>

Author: hnez

.github/workflows/check.yaml

@@ -29,3 +29,11 @@ jobs:
       - uses: actions/checkout@v6
       - run: rustup toolchain install stable
       - run: rustup run stable cargo clippy --all
+
+  test:
+    name: cargo test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - run: rustup toolchain install stable
+      - run: rustup run stable cargo test