Bump promise-polyfill from 6.0.2 to 8.1.3

Bumps [promise-polyfill](https://github.com/taylorhakes/promise-polyfill) from 6.0.2 to 8.1.3.
- [Release notes](https://github.com/taylorhakes/promise-polyfill/releases)
- [Changelog](https://github.com/taylorhakes/promise-polyfill/blob/master/CHANGELOG.md)
- [Commits](taylorhakes/promise-polyfill@6.0.2...8.1.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

package.json

@@ -126,7 +126,7 @@
     "openlayers": "4.6.5",
     "pbf": "3.0.2",
     "proj4": "2.5.0",
-    "promise-polyfill": "6.0.2",
+    "promise-polyfill": "8.1.3",
     "three": "0.92.0",
     "xlsx": "0.15.1",
     "xml-js": "1.6.11"