Fix GitHub workflow

Author: luk3yx

.github/workflows/pythonapp.yml

@@ -19,6 +19,6 @@ jobs:
       with:
         python-version: ${{ matrix.python_version }}
     - name: Install dependencies
-      run: python -m pip install miniirc pytest
+      run: python -m pip install miniirc pytest 'requests>=2.22.0,<3'
     - name: Run pytest
       run: pytest