Bump @babel/preset-env from 7.7.6 to 7.7.7
Bump @babel/preset-env from 7.7.6 to 7.7.7

Bumps [@babel/preset-env](https://github.com/babel/babel) from 7.7.6 to 7.7.7.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/compare/v7.7.6...v7.7.7)

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