Bump typescript from 3.1.4 to 3.1.5 (#3069)

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.1.4 to 3.1.5.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](https://github.com/Microsoft/TypeScript/compare/v3.1.4...v3.1.5)

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

package-lock.json

@@ -15863,9 +15863,9 @@
 			}
 		},
 		"typescript": {
-			"version": "3.1.4",
-			"resolved": "https://registry.npmjs.org/typescript/-/typescript-3.1.4.tgz",
-			"integrity": "sha512-JZHJtA6ZL15+Q3Dqkbh8iCUmvxD3iJ7ujXS+fVkKnwIVAdHc5BJTDNM0aTrnr2luKulFjU7W+SRhDZvi66Ru7Q=="
+			"version": "3.1.5",
+			"resolved": "https://registry.npmjs.org/typescript/-/typescript-3.1.5.tgz",
+			"integrity": "sha512-muYNWV9j5+3mXoKD6oPONKuGUmYiFX14gfo9lWm9ZXRHOqVDQiB4q1CzFPbF4QLV2E9TZXH6oK55oQ94rn3PpA=="
 		},
 		"typescript-eslint-parser": {
 			"version": "20.1.1",

package.json

@@ -204,7 +204,7 @@
 		"ts-loader": "5.3.0",
 		"ts-node": "7.0.1",
 		"tslint": "5.10.0",
-		"typescript": "3.1.4",
+		"typescript": "3.1.5",
 		"typescript-eslint-parser": "20.1.1",
 		"uglify-es": "3.3.9",
 		"url-loader": "1.1.2",