fix linters

.github/workflows/lint_python.yml

@@ -15,5 +15,5 @@ jobs:
             - run: mypy --install-types --non-interactive --ignore-missing-imports ./rembg
             - run: bandit --recursive --skip B101,B104,B310,B311,B303,B110 --exclude ./rembg/_version.py ./rembg
             - run: black --force-exclude rembg/_version.py --check --diff ./rembg
-            - run: flake8 ./rembg --count --ignore=B008,C901,E203,E266,E731,F401,F811,F841,W503 --max-line-length=120 --show-source --statistics --exclude ./rembg/_version.py
+            - run: flake8 ./rembg --count --ignore=B008,C901,E203,E266,E731,F401,F811,F841,W503,E501 --show-source --statistics --exclude ./rembg/_version.py
             - run: isort --check-only --profile black ./rembg