Adjust github actions

Author: laurynas

.github/workflows/main.yml

@@ -18,9 +18,12 @@ jobs:
       - uses: actions/setup-python@v3
         with:
           python-version: ${{ matrix.python-version }}
-      - run: pip install -r requirements.txt
-      - run: pip install -r test-requirements.txt
-      - run: python setup.py develop
+          cache: 'pip'
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+          pip install -r test-requirements.txt
       - env:
           DETECTLANGUAGE_API_KEY: ${{ secrets.DETECTLANGUAGE_API_KEY }}
         run: nosetests