Bump @types/chai from 4.2.0 to 4.2.3 in /js

Bumps [@types/chai](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/chai) from 4.2.0 to 4.2.3.
- [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>

js/package.json

@@ -39,7 +39,7 @@
     "vuex": "^3.1.0"
   },
   "devDependencies": {
-    "@types/chai": "^4.1.7",
+    "@types/chai": "^4.2.3",
     "@types/leaflet": "^1.4.4",
     "@types/lodash": "^4.14.123",
     "@types/mocha": "^5.2.6",

js/yarn.lock

@@ -795,10 +795,10 @@
     error-stack-parser "^2.0.0"
     string-width "^2.0.0"
 
-"@types/chai@^4.1.7":
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.2.0.tgz#2478260021408dec32c123a7cad3414beb811a07"
-  integrity sha512-zw8UvoBEImn392tLjxoavuonblX/4Yb9ha4KBU10FirCfwgzhKO0dvyJSF9ByxV1xK1r2AgnAi/tvQaLgxQqxA==
+"@types/chai@^4.2.3":
+  version "4.2.3"
+  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.2.3.tgz#419477a3d5202bad19e14c787940a61dc9ea6407"
+  integrity sha512-VRw2xEGbll3ZiTQ4J02/hUjNqZoue1bMhoo2dgM2LXjDdyaq4q80HgBDHwpI0/VKlo4Eg+BavyQMv/NYgTetzA==
 
 "@types/eslint-visitor-keys@^1.0.0":
   version "1.0.0"