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/users.hbs

@@ -19,7 +19,7 @@
                     {{#each page_data}}
                     <tr>
                         <td>
-                            <img class="float-start me-2 rounded identicon" data-src="{{Email}}">
+                            <svg width="48" height="48" class="float-start me-2 rounded" data-jdenticon-value="{{Email}}">
                             <div class="float-start">
                                 <strong>{{Name}}</strong>
                                 <span class="d-block">{{Email}}</span>
@@ -206,12 +206,6 @@
         "3": { "name": "Manager", "color": "green" },
     };
 
-    (async () => {
-        for (let e of document.querySelectorAll("img.identicon")) {
-            e.src = await identicon(e.dataset.src);
-        }
-    })();
-
     document.querySelectorAll("[data-orgtype]").forEach(function (e) {
         let orgtype = OrgTypes[e.dataset.orgtype];
         e.style.backgroundColor = orgtype.color;