Bump babel-core from 4.7.16 to 6.26.3 in /Auth/LearningHub.Nhs.Auth

Bumps [babel-core](https://github.com/babel/babel) from 4.7.16 to 6.26.3.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](babel/babel@v4.7.16...v6.26.3)

---
updated-dependencies:
- dependency-name: babel-core
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Auth/LearningHub.Nhs.Auth/package.json

@@ -28,7 +28,7 @@
   "devDependencies": {
     "@babel/core": "^7.14.0",
     "@babel/preset-env": "^7.14.1",
-    "babel-core": "^4.7.16",
+    "babel-core": "^6.26.3",
     "babel-loader": "^8.2.2",
     "babel-preset-env": "^1.6.0",
     "babel-preset-stage-3": "^6.24.1",