Update package.json (#65)

### Description of the Changes

Please add a detailed description of the change, whether it's an
enhancement or a bugfix.
If the PR is related to an open issue please link to it.

### CheckLists

- [ ] changes have been done against master branch, and PR does not
conflict
- [ ] new unit / functional tests have been added (whenever applicable)
- [ ] test are passing in local environment
- [ ] Travis tests are passing (or test results are not worse than on
master branch :))
- [ ] Docs have been updated

package.json

@@ -52,7 +52,7 @@
   "kaltura": {
     "name": "related",
     "dependencies": {
-      "playkit-ui-managers": "1.5.4"
+      "playkit-ui-managers": "1.5.6"
     }
   },
   "browserslist": [