fix(suspensions): fix missing datetime cast

A missing datetime cast caused issues in the suspension service, where it tried calling Carbon methods on a string (which should have been a Carbon instance).

app/Ban.php

@@ -36,7 +36,7 @@ class Ban extends Model
     ];
 
     public $casts = [
-        'bannedUntil',
+        'bannedUntil' => 'datetime',
     ];
 
     public function user()

app/Exceptions/Handler.php

@@ -57,13 +57,13 @@ class Handler extends ExceptionHandler
      * Render an exception into an HTTP response.
      *
      * @param  \Illuminate\Http\Request  $request
-     * @param  \Throwable  $exception
+     * @param  \Throwable  $e
      * @return \Symfony\Component\HttpFoundation\Response
      *
      * @throws \Throwable
      */
-    public function render($request, Throwable $exception)
+    public function render($request, Throwable $e)
     {
-        return parent::render($request, $exception);
+        return parent::render($request, $e);
     }
 }