chore: upgrade to laravel 10 (monicahq/chandler#432)

app/Models/UserNotificationChannel.php

@@ -44,22 +44,12 @@ class UserNotificationChannel extends Model
      */
     protected $casts = [
         'active' => 'boolean',
-    ];
-
-    /**
-     * The attributes that should be mutated to dates.
-     *
-     * @var array
-     */
-    protected $dates = [
-        'verified_at',
-        'preferred_time',
+        'verified_at' => 'datetime',
+        'preferred_time' => 'datetime',
     ];
 
     /**
      * Get the user associated with the user notification channel.
-     *
-     * @return BelongsTo
      */
     public function user(): BelongsTo
     {
@@ -69,8 +59,6 @@ class UserNotificationChannel extends Model
     /**
      * Get the user notification sent records associated with the user
      * notification channel.
-     *
-     * @return HasMany
      */
     public function userNotificationSent(): HasMany
     {
@@ -79,8 +67,6 @@ class UserNotificationChannel extends Model
 
     /**
      * Get the contact reminder records associated with the user.
-     *
-     * @return BelongsToMany
      */
     public function contactReminders(): BelongsToMany
     {