Bump @typescript-eslint/eslint-plugin from 4.26.1 to 4.28.1

Bumps [@typescript-eslint/eslint-plugin](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/eslint-plugin) from 4.26.1 to 4.28.1.
- [Release notes](https://github.com/typescript-eslint/typescript-eslint/releases)
- [Changelog](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/CHANGELOG.md)
- [Commits](https://github.com/typescript-eslint/typescript-eslint/commits/v4.28.1/packages/eslint-plugin)

---
updated-dependencies:
- dependency-name: "@typescript-eslint/eslint-plugin"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -14,7 +14,7 @@
     "@babel/preset-env": "^7.14.7",
     "@babel/preset-react": "^7.14.5",
     "@babel/preset-typescript": "^7.14.5",
-    "@typescript-eslint/eslint-plugin": "^4.26.1",
+    "@typescript-eslint/eslint-plugin": "^4.28.1",
     "@typescript-eslint/parser": "^4.26.1",
     "@uupaa/dynamic-import-polyfill": "^1.0.2",
     "autoprefixer": "^10.2.6",