Allow stubs to depend on numpy (#9499)

.github/workflows/tests.yml

@@ -91,10 +91,10 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
         with:
-          python-version: "3.10"
+          python-version: ${{ matrix.python-version }}
           cache: pip
           cache-dependency-path: requirements-tests.txt
-      - run: pip install -r requirements-tests.txt
+      - run: pip install $(grep mypy== requirements-tests.txt) packaging pathspec termcolor tomli typing-extensions
       - run: python ./tests/mypy_test.py --platform=${{ matrix.platform }} --python-version=${{ matrix.python-version }}
 
   regression-tests: