chore(deps-dev): bump @types/chai from 4.2.0 to 4.2.1

Bumps [@types/chai](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/chai) from 4.2.0 to 4.2.1.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/chai)

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

package.json

@@ -102,7 +102,7 @@
  "@babel/preset-typescript": "7.3.3",
  "@babel/register": "^7.5.5",
  "@istanbuljs/nyc-config-typescript": "^0.1.3",
- "@types/chai": "^4.2.0",
+ "@types/chai": "^4.2.1",
  "@types/chai-as-promised": "^7.1.2",
  "@types/cross-spawn": "^6.0.0",
  "@types/debug": "^4.1.5",

yarn.lock

@@ -866,10 +866,10 @@
  dependencies:
  "@types/chai" "*"
 
-"@types/chai@*", "@types/chai@^4.2.0":
- version "4.2.0"
- resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.2.0.tgz#2478260021408dec32c123a7cad3414beb811a07"
- integrity sha512-zw8UvoBEImn392tLjxoavuonblX/4Yb9ha4KBU10FirCfwgzhKO0dvyJSF9ByxV1xK1r2AgnAi/tvQaLgxQqxA==
+"@types/chai@*", "@types/chai@^4.2.1":
+ version "4.2.1"
+ resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.2.1.tgz#de162553aceca778d989929d821c5d4942921ebc"
+ integrity sha512-LDKlQW/V8bQr5p9aoHye9p7x9faxq0GVeWAkn/Zgyyn848LIAzuR1sHQjGmUBFUpINuGWDG2NTM/ofA2aLMIew==
 
 "@types/clean-css@*":
  version "4.2.0"