chore: upgrade moment-timezone from 0.4.1 to 0.5.26

Snyk has created this PR to upgrade moment-timezone from 0.4.1 to 0.5.26.

See this package in NPM:
https://www.npmjs.com/package/moment-timezone

See this project in Snyk:
https://app.snyk.io/org/annejan/project/f0ee6c0c-bcdd-4edc-9ec9-df5db844dafe?utm_source=github&utm_medium=upgrade-pr

package.json

@@ -15,7 +15,7 @@
     "bootstrap": "^3.3",
     "jquery": "^1.8.3 || ^2.0 || ^3.0",
     "moment": "^2.10",
-    "moment-timezone": "^0.4.0"
+    "moment-timezone": "^0.5.26"
   },
   "description": "A date/time picker component designed to work with Bootstrap 3 and Momentjs. For usage, installation and demos see Project Site on GitHub",
   "devDependencies": {