add timestamp columns to tables

database/migrations/2018_12_23_100532_add_timestamps_bidders.php

@@ -13,7 +13,7 @@ class AddTimestampsBidders extends Migration
      */
     public function up()
     {
-        Schema::table('bidders', function (Blueprint $table) {
+        Schema::table('bidders', function ($table) {
           $table->timestamps();
         });
     }

database/migrations/2018_12_23_100646_add_timestamps_checkout.php

@@ -13,7 +13,7 @@ class AddTimestampsCheckout extends Migration
      */
     public function up()
     {
-      Schema::table('checkout', function (Blueprint $table) {
+      Schema::table('checkout', function ($table) {
         $table->timestamps();
       });
     }

database/migrations/2018_12_23_100651_add_timestamps_items.php

@@ -13,7 +13,7 @@ class AddTimestampsItems extends Migration
      */
     public function up()
     {
-      Schema::table('items', function (Blueprint $table) {
+      Schema::table('items', function ($table) {
         $table->timestamps();
       });
     }

database/migrations/2018_12_23_100701_add_timestamps_winningbids.php

@@ -13,7 +13,7 @@ class AddTimestampsWinningbids extends Migration
      */
     public function up()
     {
-      Schema::table('winning_bids', function (Blueprint $table) {
+      Schema::table('winning_bids', function ($table) {
         $table->timestamps();
       });
     }

database/migrations/2018_12_23_100710_add_timestamps_paymentmethods.php

@@ -13,7 +13,7 @@ class AddTimestampsPaymentmethods extends Migration
      */
     public function up()
     {
-      Schema::table('payment_methods', function (Blueprint $table) {
+      Schema::table('payment_methods', function ($table) {
         $table->timestamps();
       });
     }