Bump @vue/test-utils from 1.2.2 to 1.3.6 in /LearningHub.Nhs.WebUI

Bumps [@vue/test-utils](https://github.com/vuejs/test-utils) from 1.2.2 to 1.3.6.
- [Release notes](https://github.com/vuejs/test-utils/releases)
- [Commits](https://github.com/vuejs/test-utils/commits)

---
updated-dependencies:
- dependency-name: "@vue/test-utils"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

LearningHub.Nhs.WebUI/package-lock.json

@@ -70,7 +70,7 @@
     "@types/sanitize-html": "^2.13.0",
     "@types/vuelidate": "^0.7.22",
     "@vue/babel-preset-app": "4.5.19",
-    "@vue/test-utils": "^1.2.2",
+    "@vue/test-utils": "^1.3.6",
     "babel-core": "^6.26.0",
     "babel-loader": "^8.2.2",
     "babel-preset-env": "^1.6.0",