Bump eslint from 6.8.0 to 7.0.0

Bumps [eslint](https://github.com/eslint/eslint) from 6.8.0 to 7.0.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](https://github.com/eslint/eslint/compare/v6.8.0...v7.0.0)

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

package.json

@@ -13,7 +13,7 @@
     "clean-css-cli": "^4.3.0",
     "core-js": "^3.1.4",
     "cross-env": "^7.0.2",
-    "eslint": "^6.0.0",
+    "eslint": "^7.0.0",
     "esm": "^3.2.25",
     "foreach-cli": "^1.8.1",
     "glob": "^7.1.4",