Bump webpack-merge from 5.1.0 to 5.1.4
Bump webpack-merge from 5.1.0 to 5.1.4

Bumps [webpack-merge](https://github.com/survivejs/webpack-merge) from 5.1.0 to 5.1.4.
- [Release notes](https://github.com/survivejs/webpack-merge/releases)
- [Changelog](https://github.com/survivejs/webpack-merge/blob/master/CHANGELOG.md)
- [Commits](https://github.com/survivejs/webpack-merge/compare/v5.1.0...v5.1.4)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
openlayers/ol3-cesium,openlayers/ol3-cesium,openlayers/ol-cesium,openlayers/ol-cesium