fix(deps): update dependency @coveo/headless to v3

Author: renovate-coveo[bot]

.github/package.json

@@ -7,7 +7,7 @@
   ],
   "main": "src/index.tsx",
   "dependencies": {
-    "@coveo/headless": "1.32.0",
+    "@coveo/headless": "3.27.6",
     "@material-ui/core": "4.11.0",
     "@material-ui/icons": "4.11.2",
     "@material-ui/lab": "4.0.0-alpha.56",