Upgrade angular from 19 to 20.

frontend/src/app/components/header/header.component.ts

@@ -1,4 +1,4 @@
-import { CommonModule } from '@angular/common';
+
 import { Component, inject } from '@angular/core';
 import { FormControl, ReactiveFormsModule } from '@angular/forms';
 import { MatButtonModule } from '@angular/material/button';
@@ -14,17 +14,16 @@ import { SideMenuComponent } from '../side-menu/side-menu.component';
 @Component({
     selector: 'app-header',
     imports: [
-        CommonModule,
-        MatButtonModule,
-        MatIconModule,
-        MatMenuModule,
-        MatRippleModule,
-        MatTooltipModule,
-        PublicationsSearchBarComponent,
-        ReactiveFormsModule,
-        RouterModule,
-        SideMenuComponent,
-    ],
+    MatButtonModule,
+    MatIconModule,
+    MatMenuModule,
+    MatRippleModule,
+    MatTooltipModule,
+    PublicationsSearchBarComponent,
+    ReactiveFormsModule,
+    RouterModule,
+    SideMenuComponent
+],
     templateUrl: './header.component.html',
     styleUrl: './header.component.scss'
 })

frontend/src/app/components/submit-button/submit-button.component.ts

@@ -1,4 +1,4 @@
-import { CommonModule } from "@angular/common";
+
 import { Component, EventEmitter, Input, Output } from "@angular/core";
 import { MatRippleModule } from "@angular/material/core";
 import { MatProgressSpinnerModule } from "@angular/material/progress-spinner";
@@ -8,10 +8,9 @@ import { MatProgressSpinnerModule } from "@angular/material/progress-spinner";
     templateUrl: 'submit-button.component.html',
     styleUrl: 'submit-button.component.scss',
     imports: [
-        CommonModule,
-        MatRippleModule,
-        MatProgressSpinnerModule
-    ]
+    MatRippleModule,
+    MatProgressSpinnerModule
+]
 })
 export class SubmitButtonComponent {
     @Input() requestPending: boolean = false;