fix:install flake8

Author: cunla

Diff for: .github/workflows/test.yaml

@@ -24,7 +24,10 @@ jobs:
         with:
           python-version: 3.12
           allow-prereleases: true
-
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install flake8
       - name: Run flake8
         shell: bash
         run: |