Bump regenerator-runtime from 0.13.7 to 0.13.9

Bumps [regenerator-runtime](https://github.com/facebook/regenerator) from 0.13.7 to 0.13.9.
- [Release notes](https://github.com/facebook/regenerator/releases)
- [Commits](https://github.com/facebook/regenerator/compare/regenerator-runtime@0.13.7...regenerator-runtime@0.13.9)

---
updated-dependencies:
- dependency-name: regenerator-runtime
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -38,7 +38,7 @@
     "micromatch": "^4.0.4",
     "mixin-deep": "^2.0.1",
     "node-sass": "^6.0.1",
-    "regenerator-runtime": "^0.13.7",
+    "regenerator-runtime": "^0.13.9",
     "set-value": "^4.0.0"
   },
   "resolutions": {