Bump eslint from 7.27.0 to 7.28.0 in /generators/app/templates

Bumps [eslint](https://github.com/eslint/eslint) from 7.27.0 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@v7.27.0...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>

generators/app/templates/package.json

@@ -44,7 +44,7 @@
     "expect": "26.6.2",
     "eslint-config-prettier": "8.3.0",
     "eslint-plugin-prettier": "3.4.0",
-    "eslint": "7.27.0",
+    "eslint": "7.28.0",
     "babel-jest": "26.6.3",
     "jest": "26.6.3",
     "jest-circus": "26.6.3",