Bump eslint from 6.6.0 to 6.8.0

Bumps [eslint](https://github.com/eslint/eslint) from 6.6.0 to 6.8.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v6.6.0...v6.8.0)

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

package.json

@@ -81,7 +81,7 @@
     "d3": "5.14.2",
     "editorconfig-checker": "3.0.3",
     "ejs-loader": "0.3.5",
-    "eslint": "6.6.0",
+    "eslint": "6.8.0",
     "eslint-config-openlayers": "13.0.0",
     "eslint-plugin-googshift": "0.9.3",
     "eslint-plugin-import": "2.19.1",