Bump worker-loader from 3.0.3 to 3.0.4
Bump worker-loader from 3.0.3 to 3.0.4

Bumps [worker-loader](https://github.com/webpack-contrib/worker-loader) from 3.0.3 to 3.0.4.
- [Release notes](https://github.com/webpack-contrib/worker-loader/releases)
- [Changelog](https://github.com/webpack-contrib/worker-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/worker-loader/compare/v3.0.3...v3.0.4)

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