Update dependencies for Rust and Admin interface.

- Updated Rust deps and one small change regarding chrono
- Updated bootstrap 5 css
- Updated datatables
- Replaced identicon.js with jdenticon.
  identicon.js is unmaintained ( https://github.com/stewartlord/identicon.js/issues/52 )
  The icon's are very different, but nice. It also doesn't need custom
  code to find and update the icons our selfs.

src/static/templates/admin/base.hbs

@@ -28,7 +28,7 @@
             border: var(--bs-alert-border);
         }
     </style>
-    <script src="{{urlpath}}/vw_static/identicon.js"></script>
+    <script src="{{urlpath}}/vw_static/jdenticon.js"></script>
     <script>
         'use strict';
 
@@ -49,11 +49,6 @@
             const hashHex = hashArray.map(b => b.toString(16).padStart(2, '0')).join('');
             return hashHex;
         }
-        async function identicon(email) {
-            const hash = await sha256(email);
-            const data = new Identicon(hash, { size: 48, format: 'svg' });
-            return "data:image/svg+xml;base64," + data.toString();
-        }
         function toggleVis(input_id) {
             const elem = document.getElementById(input_id);
             const type = elem.getAttribute("type");