UI: fix merge conflict in package.json
"@material-ui/icons": "^4.5.1",
"axios": "^0.19.0",
"classnames": "^2.2.6",
-<<<<<<< HEAD
"dompurify": "^2.0.7",
"katex": "^0.11.1",
-=======
- "dompurify": "^2.0.12",
->>>>>>> ca4fcbe... update
"lodash": "^4.17.15",
"mathjax": "^3.0.0",
"mathjax-full": "^3.0.0",
