chore(dev-deps): bump @types/chai from 4.3.6 to 4.3.8

Bumps [@types/chai](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/chai) from 4.3.6 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] <support@github.com>

yarn.lock

@@ -221,9 +221,9 @@
     "@types/color-name" "*"
 
 "@types/chai@^4":
-  version "4.3.6"
-  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.3.6.tgz#7b489e8baf393d5dd1266fb203ddd4ea941259e6"
-  integrity sha512-VOVRLM1mBxIRxydiViqPcKn6MIxZytrbMpd6RJLIWKxUNr3zux8no0Oc7kJx0WAPIitgZ0gkrDS+btlqQpubpw==
+  version "4.3.8"
+  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.3.8.tgz#aa200a264a3bc78ccfc1718eedbd3b9d5a591270"
+  integrity sha512-yW/qTM4mRBBcsA9Xw9FbcImYtFPY7sgr+G/O5RDYVmxiy9a+pE5FyoFUi8JYCZY5nicj8atrr1pcfPiYpeNGOA==
 
 "@types/color-name@*", "@types/color-name@^1.1.1":
   version "1.1.1"