Update golang version to 1.15.1 (#1480)
Update golang version to 1.15.1 (#1480)

Signed-off-by: Ricardo Seriani <918953b567639894b1ea5831466216af43fff8ee@gmail.com>
svpernova09/homestead,laravel/homestead,laravel/homestead,svpernova09/homestead,laravel/homestead,svpernova09/homestead