Update lodash.uniq requirement from ^3.2.2 to ^4.5.0

Updates the requirements on [lodash.uniq](https://github.com/lodash/lodash) to permit the latest version.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Changelog](https://github.com/lodash/lodash/blob/master/CHANGELOG)
- [Commits](https://github.com/lodash/lodash/commits)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot-support

package.json

@@ -14,7 +14,7 @@
     "chroma-js": "^1.1.1",
     "is-svg": "^3.0.0",
     "lodash.compact": "^3.0.0",
-    "lodash.uniq": "^3.2.2"
+    "lodash.uniq": "^4.5.0"
   },
   "devDependencies": {
     "mocha": "^5.2.0"