bootstrap.min.css merging issue

Hi

I get an issue on bootstrap.min.css merging:
Plugin deletes double quotes in

.navbar-light .navbar-toggler-icon {
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 30 30' xmlns='https://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba(0, 0, 0, 0.5)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E")
}

and it breaks all following styles
Bootstrap v4.1.0
Issue is observable only when merging toggle is on
Exclusion of this file solves the problem

Please fix this issue in the next release