MVP DOMPurify Swap over sanitize-html

Signed-off-by: Eric Peterson <ericpeterson@spotify.com>

plugins/techdocs/package.json

@@ -44,6 +44,7 @@
     "@material-ui/icons": "^4.9.1",
     "@material-ui/lab": "4.0.0-alpha.45",
     "@material-ui/styles": "^4.10.0",
+    "dompurify": "^2.2.9",
     "eventsource": "^1.1.0",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
@@ -63,6 +64,7 @@
     "@testing-library/react": "^11.2.5",
     "@testing-library/react-hooks": "^3.4.2",
     "@testing-library/user-event": "^13.1.8",
+    "@types/dompurify": "^2.2.2",
     "@types/eventsource": "^1.1.5",
     "@types/jest": "^26.0.7",
     "@types/node": "^14.14.32",