[Snyk] Security upgrade lxml from 4.5.1 to 4.6.5#11

Open

snyk-bot wants to merge 1 commit intomasterfrom

snyk-fix-4fcdcccee17cc1e12892c63c3bfef697

Commits on Dec 15, 2021

fix: requirements-dev.txt to reduce vulnerabilities
snyk-bot
committed