refactor(DB): make integration dependent fields nullable

Signed-off-by: miguel456 <me@nogueira.codes>

database/migrations/2022_10_15_023108_update_vacancy_integration_nullable.php

@@ -0,0 +1,24 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class UpdateVacancyIntegrationNullable extends Migration
+{
+    public function up()
+    {
+        Schema::table('vacancies', function (Blueprint $table) {
+            $table->string('permissionGroupName')->nullable()->change();
+            $table->string('discordRoleID')->nullable()->change();
+        });
+    }
+
+    public function down()
+    {
+        Schema::table('vacancies', function (Blueprint $table) {
+            $table->string('permissionGroupName')->nullable(false)->change();
+            $table->string('discordRoleID')->nullable(false)->change();
+        });
+    }
+}