Bump @types/chai from 4.3.7 to 4.3.8 (#786)

Bumps [@types/chai](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/chai) from 4.3.7 to 4.3.8.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/chai)

---
updated-dependencies:
- dependency-name: "@types/chai"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -18,7 +18,7 @@
   "license": "MIT",
   "devDependencies": {
     "@types/adm-zip": "^0.5.2",
-    "@types/chai": "^4.3.7",
+    "@types/chai": "^4.3.8",
     "@types/chai-as-promised": "^7.1.6",
     "@types/chrome-remote-interface": "^0.31.11",
     "@types/express": "^4.17.19",