Bump @types/chai from 4.2.17 to 4.2.18

Bumps [@types/chai](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/chai) from 4.2.17 to 4.2.18.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/chai)

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

Author: dependabot[bot]

yarn.lock

@@ -940,9 +940,9 @@
     physical-cpu-count "^2.0.0"
 
 "@types/chai@^4.2.16":
-  version "4.2.17"
-  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.2.17.tgz#85f9f0610f514b22a94125d441f73eef65bde5cc"
-  integrity sha512-LaiwWNnYuL8xJlQcE91QB2JoswWZckq9A4b+nMPq8dt8AP96727Nb3X4e74u+E3tm4NLTILNI9MYFsyVc30wSA==
+  version "4.2.18"
+  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.2.18.tgz#0c8e298dbff8205e2266606c1ea5fbdba29b46e4"
+  integrity sha512-rS27+EkB/RE1Iz3u0XtVL5q36MGDWbgYe7zWiodyKNUnthxY0rukK5V36eiUCtCisB7NN8zKYH6DO2M37qxFEQ==
 
 "@types/md5@^2.3.0":
   version "2.3.0"