Install dependencies for linting

Author: colinrotherham

.github/workflows/stage-2-test.yaml

@@ -91,15 +91,27 @@ jobs:
     name: "Linting"
     runs-on: ubuntu-latest
     timeout-minutes: 5
+
     steps:
       - name: "Checkout code"
         uses: actions/checkout@v4
-      - name: "Run linting"
-        run: |
-          make test-lint
-      - name: "Save the linting result"
-        run: |
-          echo "Nothing to save"
+
+      - name: Install poetry
+        run: pipx install poetry
+
+      - name: Set up Python
+        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065
+        with:
+          python-version: "${{inputs.python_version}}"
+          cache: poetry
+          cache-dependency-path: ./poetry.lock
+
+      - name: Install dependencies
+        run: make dependencies
+
+      - name: Run linting
+        run: make test-lint
+
   perform-static-analysis:
     name: "Perform static analysis"
     needs: [test]