Upgrading to Angular 20:

Replaced checked in package-lock.json by regenerated one.
Ran ng update @angular/core@20 @angular/cli@20
Ran npm install @angular-builders/jest@^20.0.0 @fortawesome/angular-fontawesome@^3.0.0 @swimlane/ngx-graph@^11
Ran npm install ngx-mat-select-search@^8.0.2.
Ran ng update @angular/material@20.
Updated all eslint and typescript to the latest versions.
Removed @angular-devkit/schematics.
Updated fontawesome.
Updated rxjs and tslib.
Moved required node version from 16 to 20.
Updated jest-preset-angular.
Set preserveWhitespaces to false.
Corrected two type declarations in two typescript files to make ng serve run without errors.
Removed unused angular-devkit/schematics from view-user.component.ts .
Updated list of supported browsers.
Upgraded prettier.
Ran prettier . --write the first time.
Ran prettier . --write the second time.
Ran ng generate @angular/core:inject with defaults, excepted a handful of files.
Fixed remaining eslint problems.
Added dist directory to ignores in eslint.config.js.
Let prettier fix formatting, almost everything is just line breaks.
Made htmlhint ignore @if and @for Angular constructs.
Updated node version in Github workflow to 22.12.0 (build.yml).
Updated .env.ts.
Updated Angular datetime format strings from YYYY-MM-DD to yyyy-MM-dd.
Merged changes from dev into angular20 branch.

src/app/system/roles-and-permissions/roles-and-permissions.component.html

@@ -46,15 +46,11 @@
       <ng-container matColumnDef="actions">
         <th mat-header-cell *matHeaderCellDef>{{ 'labels.inputs.Actions' | translate }}</th>
         <td mat-cell *matCellDef="let role">
-          <button
-            *ngIf="role.name !== 'Super user'"
-            mat-icon-button
-            color="primary"
-            (click)="routeEdit($event)"
-            [routerLink]="[role.id, 'edit']"
-          >
-            <fa-icon icon="edit"> {{ 'labels.buttons.Edit' | translate }} </fa-icon>
-          </button>
+          @if (role.name !== 'Super user') {
+            <button mat-icon-button color="primary" (click)="routeEdit($event)" [routerLink]="[role.id, 'edit']">
+              <fa-icon icon="edit"> {{ 'labels.buttons.Edit' | translate }} </fa-icon>
+            </button>
+          }
         </td>
       </ng-container>