Fix CI workflow

Author: fasterthanlime

.github/workflows/test.yml

@@ -11,12 +11,12 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Install Rust
         uses: actions-rs/toolchain@v1
         with:
           toolchain: stable
           profile: minimal
           override: true
-      - name: Run tests
-        run: cargo run
+      - name: Run tests (including doctests)
+        run: cargo test