Add next_reminder_at column on invoices table

packages/Webkul/Sales/src/Database/Migrations/2021_10_30_112900_add_next_reminder_at_on_invoices_table.php

@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddNextReminderAtOnInvoicesTable extends Migration
+{
+    /**
+     * Add next_reminder_at column on invoices table.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('invoices', function (Blueprint $table) {
+            $table->timestamp('next_reminder_at')->nullable();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('invoices', function (Blueprint $table) {
+            $table->dropColumn('next_reminder_at');
+        });
+    }
+}