update emotion dependency for site (#4783)

package.json

@@ -54,6 +54,7 @@
     "@babel/runtime": "^7.7.4",
     "@changesets/changelog-github": "^0.3.0",
     "@changesets/cli": "^2.14.1",
+    "@emotion/css": "^11.7.1",
     "@testing-library/cypress": "^8.0.0",
     "@types/jest": "27.0.1",
     "@types/lodash": "^4.14.149",
@@ -68,7 +69,6 @@
     "babel-plugin-dev-expression": "^0.2.2",
     "babel-plugin-module-resolver": "^3.1.1",
     "cypress": "^8.3.0",
-    "emotion": "^10.0.9",
     "eslint": "^6.7.1",
     "eslint-config-prettier": "^6.7.0",
     "eslint-plugin-import": "^2.18.2",