Move Python tests into their own job

.forgejo/workflows/build.yaml

@@ -42,7 +42,6 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: "3.13"
-          cache: pip
       - name: Set up the Python environment
         # For most Python CI stuff this isn't needed, but maturin specifically doesn't like to function without a venv
         run: |
@@ -52,14 +51,35 @@ jobs:
       - name: Build Rust code
         run: |
           source venv/bin/activate
-          maturin develop
+          maturin build
+      - name: Save built wheel
+        uses: forgejo/upload-artifact@v4
+        with:
+          name: pyority_queue.whl
+          path: target/wheels/*.whl
+          compression-level: 0
+
+  python-test:
+    name: Python tests
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout the code
+        uses: actions/checkout@v4
+      - name: Set up the Python toolchain
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+      - name: Set up the Python environment
+        run: pip install -r requirements.txt
+      - name: Retrieve built wheel
+        uses: forgejo/download-artifact@v4
+      - name: Install built wheel
+        run: pip install pyority_queue.whl
       - name: Run Python tests
-        run: |
+        run: pytest tests/*.py
-          source venv/bin/activate
-          pytest tests/*.py
 
   rust-test:
-    name: Rust test
+    name: Rust tests
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout the code