Bump fetch-mock from 7.3.1 to 9.11.0

Bumps [fetch-mock](https://github.com/wheresrhys/fetch-mock) from 7.3.1 to 9.11.0.
- [Release notes](https://github.com/wheresrhys/fetch-mock/releases)
- [Commits](wheresrhys/fetch-mock@v7.3.1...v9.11.0)

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

Author: dependabot[bot]

package-lock.json

@@ -53,7 +53,7 @@
     "coveralls": "^3.0.3",
     "eslint": "^5.15.1",
     "eslint-plugin-jsdoc": "^4.1.1",
-    "fetch-mock": "^7.3.1",
+    "fetch-mock": "^9.11.0",
     "jsdoc-to-markdown": "^5.0.0",
     "karma": "^4.4.1",
     "karma-browserify": "^6.0.0",