Bump sinon from 8.1.0 to 8.1.1
Bump sinon from 8.1.0 to 8.1.1

Bumps [sinon](https://github.com/sinonjs/sinon) from 8.1.0 to 8.1.1.
- [Release notes](https://github.com/sinonjs/sinon/releases)
- [Changelog](https://github.com/sinonjs/sinon/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sinonjs/sinon/compare/v8.1.0...v8.1.1)

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