build(deps-dev): Update tslint requirement from ~5.18.0 to ~5.19.0 (#…

…1698)

Updates the requirements on [tslint](https://github.com/palantir/tslint) to permit the latest version.
- [Release notes](https://github.com/palantir/tslint/releases)
- [Changelog](https://github.com/palantir/tslint/blob/master/CHANGELOG.md)
- [Commits](palantir/tslint@5.18.0...5.19.0)

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

package.json

@@ -35,7 +35,7 @@
     "sinon": "^7.2.0",
     "sinon-chai": "^3.2.0",
     "source-map-support": "^0.5.6",
-    "tslint": "~5.18.0",
+    "tslint": "~5.19.0",
     "tslint-consistent-codestyle": "~1.15.1",
     "typescript": "~3.5.3"
   },