Update dependency Flask to v3#979

openshift-merge-bot[bot] merged 3 commits intorelease-v1.15openshift-knative/kn-plugin-func:release-v1.15from

konflux/mintmaker/release-v1.15/flask-3.xopenshift-knative/kn-plugin-func:konflux/mintmaker/release-v1.15/flask-3.xCopy head branch name to clipboard