Bump @types/chai from 3.5.2 to 4.2.14 (#270)

Bumps [@types/chai](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/chai) from 3.5.2 to 4.2.14.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/chai)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

package-lock.json

@@ -45,7 +45,7 @@
   "devDependencies": {
     "@salesforce-ux/design-system": "^2.13.7",
     "@types/bluebird": "^3.0.37",
-    "@types/chai": "^3.4.34",
+    "@types/chai": "^4.2.14",
     "@types/fs-extra": "0.0.32",
     "@types/glob": "^7.1.3",
     "@types/graphql": "^0.8.6",