chore: upgrade pip before running

.github/workflows/main.yml

@@ -37,6 +37,7 @@ jobs:
 
       - name: Run sign
         run: |
+          python -m pip install --upgrade pip
           pip install -r requirements.txt
           echo "${{ secrets.COOKIE }}" | tr '#' "\n" | sed 's/$/&#${{ secrets.SCKEY }}/g' | xargs -I {} sh -c 'echo "{}" | python3 ./genshin.py'