Update dependency moment.js to v2.29.4

Author: renovate[bot]

src/lib/angular-material-datetimepicker/index.html

@@ -129,7 +129,7 @@ <h2>
 <script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.6.1/angular-aria.min.js"></script>
 <script src="https://cdnjs.cloudflare.com/ajax/libs/angular-material/1.1.3/angular-material.min.js"></script>
 <script type="text/javascript"
-        src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.17.1/moment-with-locales.min.js"></script>
+        src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.4/moment-with-locales.min.js"></script>
 <script type="text/javascript"
         src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.9.0/highlight.min.js"></script>
 <script type="text/javascript" src="./beautifier.js"></script>