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](eslint/eslint@v6.8.0...v7.0.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package.json

@@ -16,7 +16,7 @@
   "devDependencies": {
     "@rollup/plugin-buble": "^0.21.1",
     "coveralls": "^3.0.9",
-    "eslint": "^6.8.0",
+    "eslint": "^7.0.0",
     "npm-run-all": "^4.0.0",
     "rollup": "^2.0.6",
     "tap": "^14.10.6"