Bump flask-cors from 3.0.8 to 4.0.1 in /backend#21

dependabot[bot] wants to merge 1 commit intomastershashanoid/Simpdf:masterfrom

dependabot/pip/backend/flask-cors-4.0.1shashanoid/Simpdf:dependabot/pip/backend/flask-cors-4.0.1Copy head branch name to clipboard