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/savings/savings-account-view/transactions/view-transaction/view-transaction.component.html

@@ -9,7 +9,7 @@
     >
       {{ 'labels.heading.General' | translate }}
     </a>
-    <ng-container *ngFor="let entityDatatable of entityDatatables">
+    @for (entityDatatable of entityDatatables; track entityDatatable) {
       <a
         mat-tab-link
         [routerLink]="['./datatables', entityDatatable.registeredTableName]"
@@ -20,7 +20,7 @@
       >
         {{ entityDatatable.registeredTableName }}
       </a>
-    </ng-container>
+    }
   </nav>
 
   <mat-tab-nav-panel #tabPanel>