Apply PHP CS Fixer and Rector changes (CI)

Author: Tigrov

src/Column/BigBitColumn.php

@@ -17,7 +17,7 @@ public function dbTypecast(mixed $value): string|ExpressionInterface|null
         return BitColumnInternal::dbTypecast($value, $this->getSize());
     }
 
-    public function phpTypecast(mixed $value): string|null
+    public function phpTypecast(mixed $value): ?string
     {
         /** @var string|null $value */
         return $value;

src/Column/ColumnBuilder.php

@@ -7,8 +7,6 @@
 use Yiisoft\Db\Constant\ColumnType;
 use Yiisoft\Db\Schema\Column\ColumnInterface;
 
-use const PHP_INT_SIZE;
-
 final class ColumnBuilder extends \Yiisoft\Db\Schema\Column\ColumnBuilder
 {
     public static function boolean(): BooleanColumn