Fix Android Webview version in master
https://twbs-bootstrap.netlify.com/docs/4.3/getting-started/browsers-devices/#mobile-devices shows v5.0+
/CC @mdo: shouldn't we align this with the version we have in .browserslistrc?
https://twbs-bootstrap.netlify.com/docs/4.3/getting-started/browsers-devices/#mobile-devices shows v5.0+
/CC @mdo: shouldn't we align this with the version we have in .browserslistrc?