📝 Add step about upgrading pip in the venv to avoid errors when installing dependencies `docs/en/docs/contributing.md` (#5181)
📝 Add step about upgrading pip in the venv to avoid errors when installing dependencies `docs/en/docs/contributing.md` (#5181)

Co-authored-by: Sebastián Ramírez <668e2a3febf6a4b75056e840735926407962bc4e@gmail.com>
tiangolo/fastapi,tiangolo/fastapi,tiangolo/fastapi