Update pylint.yml

Made pylint install requirements first since this cringe is afraid of external libraries

.github/workflows/pylint.yml

@@ -15,8 +15,10 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
+      working-directory: Backend
       run: |
-        python -m pip install --upgrade pip
+        python -m pip install --upgrade pip && python -m pip install -r requirements.txt
+        
         pip install pylint
     - name: Analysing the code with pylint
       run: |