Bump jest-fetch-mock from 2.1.0 to 2.1.1 in /frontend

Bumps [jest-fetch-mock](https://github.com/jefflau/jest-fetch-mock) from 2.1.0 to 2.1.1.
- [Release notes](https://github.com/jefflau/jest-fetch-mock/releases)
- [Commits](https://github.com/jefflau/jest-fetch-mock/commits)

Signed-off-by: dependabot[bot] <support@dependabot.com>

Author: dependabot-support

frontend/package.json

@@ -39,7 +39,7 @@
     "eslint-plugin-jest": "^22.3.0",
     "eslint-plugin-prettier": "^3.0.1",
     "eslint-plugin-react": "^7.12.4",
-    "jest-fetch-mock": "^2.1.0",
+    "jest-fetch-mock": "^2.1.1",
     "node-localstorage": "^1.3.1",
     "prettier": "^1.16.4",
     "react-app-rewire-less": "^2.1.1",

frontend/yarn.lock

@@ -5422,10 +5422,10 @@ jest-environment-node@^20.0.3:
     jest-mock "^20.0.3"
     jest-util "^20.0.3"
 
-jest-fetch-mock@^2.1.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/jest-fetch-mock/-/jest-fetch-mock-2.1.0.tgz#49c16451b82f311158ec897e467d704e0cb118f9"
-  integrity sha512-jrTNlxDsZZCq6tMhdyH7gIbt4iDUHRr6C4Jp+kXItLaaaladOm9/wJjIwU3tCAEohbuW/7/naOSfg2A8H6/35g==
+jest-fetch-mock@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/jest-fetch-mock/-/jest-fetch-mock-2.1.1.tgz#fa9c5fdd228fb0d073456658831ae89cec9543e6"
+  integrity sha512-/E0I80zMRTTExfM7QQZsqizT31EMHCBnqACERd2QR+7riSgta3OcHF3RzakukzQ4o3oEyIi6OleB3PAU6ArgDg==
   dependencies:
     cross-fetch "^2.2.2"
     promise-polyfill "^7.1.1"