build(deps-dev): bump eslint from 7.13.0 to 7.28.0 (#21)

* build(deps-dev): bump eslint from 7.13.0 to 7.28.0

Bumps [eslint](https://github.com/eslint/eslint) from 7.13.0 to 7.28.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v7.13.0...v7.28.0)

---
updated-dependencies:
- dependency-name: eslint
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

* build: reinstall `eslint@7.28.0`

* build: remove duplicate packages

How this was done:

```
npx yarn-deduplicate yarn.lock
```

From https://github.com/atlassian/yarn-deduplicate

* build: run `yarn install`

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: MrChocolatine <47531779+MrChocolatine@users.noreply.github.com>

Author: dependabot[bot]

package.json

@@ -28,7 +28,7 @@
     "chai": "^4.3.4",
     "chai-as-promised": "^7.1.1",
     "ember-cli": "^2.12.0",
-    "eslint": "^7.0.0",
+    "eslint": "^7.28.0",
     "glob": "^7.1.1",
     "mocha": "^3.2.0"
   },