[workflow] Fix lint?

Author: mshroyer

.github/workflows/ci.yml

@@ -47,6 +47,8 @@ jobs:
     runs-on: ubuntu-latest
     needs: build_and_test
     steps:
+      - uses: actions/checkout@v4
+
       - name: Setup rust
         run: rustup toolchain install --profile minimal -c rustfmt,clippy nightly && rustup default nightly