Bump webpack-dev-server from 3.10.3 to 3.11.0
Bump webpack-dev-server from 3.10.3 to 3.11.0

Bumps [webpack-dev-server](https://github.com/webpack/webpack-dev-server) from 3.10.3 to 3.11.0.
- [Release notes](https://github.com/webpack/webpack-dev-server/releases)
- [Changelog](https://github.com/webpack/webpack-dev-server/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-dev-server/compare/v3.10.3...v3.11.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
openlayers/openlayers,ahocevar/ol3,geekdenz/ol3,adube/ol3,stweil/ol3,ahocevar/ol3,geekdenz/openlayers,openlayers/openlayers,oterral/ol3,oterral/ol3,adube/ol3,stweil/ol3,adube/ol3,geekdenz/ol3,geekdenz/openlayers,stweil/openlayers,stweil/ol3,ahocevar/openlayers,geekdenz/openlayers,ahocevar/ol3,bjornharrtell/ol3,stweil/openlayers,ahocevar/openlayers,geekdenz/ol3,openlayers/openlayers,geekdenz/ol3,stweil/openlayers,stweil/ol3,bjornharrtell/ol3,ahocevar/openlayers,ahocevar/ol3,bjornharrtell/ol3,oterral/ol3