Fix Illuminate\Database\Query\Builder::whereDate type hint for $colum…

…n parameter (#39868)

* Fix Illuminate\Database\Query\Builder::whereDate type hint for $column parameter

* Update Builder.php

Co-authored-by: Taylor Otwell <taylor@laravel.com>

src/Illuminate/Database/Query/Builder.php

@@ -1242,7 +1242,7 @@ public function orWhereNotNull($column)
     /**
      * Add a "where date" statement to the query.
      *
-     * @param  string  $column
+     * @param  \Illuminate\Database\Query\Expression|string  $column
      * @param  string  $operator
      * @param  \DateTimeInterface|string|null  $value
      * @param  string  $boolean