feat: add grace_period_until to users table

app/Models/User.php

@@ -17,7 +17,7 @@ use Laravel\Cashier\Billable;
 use Laravel\Fortify\TwoFactorAuthenticatable;
 use Laravel\Sanctum\HasApiTokens;
 
-#[Fillable(['name', 'email', 'email_verified_at', 'password', 'is_admin', 'postcode', 'preferred_fuel_type'])]
+#[Fillable(['name', 'email', 'email_verified_at', 'password', 'is_admin', 'postcode', 'preferred_fuel_type', 'grace_period_until'])]
 #[Hidden(['password', 'two_factor_secret', 'two_factor_recovery_codes', 'remember_token'])]
 class User extends Authenticatable implements FilamentUser
 {
@@ -35,6 +35,7 @@ class User extends Authenticatable implements FilamentUser
             'email_verified_at' => 'datetime',
             'password' => 'hashed',
             'is_admin' => 'boolean',
+            'grace_period_until' => 'datetime',
         ];
     }