Update ergebnis/composer-normalize requirement from ~2.21.0 to ~2.28.3

Updates the requirements on [ergebnis/composer-normalize](https://github.com/ergebnis/composer-normalize) to permit the latest version.
- [Release notes](https://github.com/ergebnis/composer-normalize/releases)
- [Changelog](https://github.com/ergebnis/composer-normalize/blob/main/CHANGELOG.md)
- [Commits](ergebnis/composer-normalize@2.21.0...2.28.3)

---
updated-dependencies:
- dependency-name: ergebnis/composer-normalize
  dependency-type: direct:development
...

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

composer.json

@@ -33,7 +33,7 @@
     "require-dev": {
         "acquia/coding-standards": "^2.0",
         "dealerdirect/phpcodesniffer-composer-installer": "^0.7.2",
-        "ergebnis/composer-normalize": "~2.21.0",
+        "ergebnis/composer-normalize": "~2.28.3",
         "phpro/grumphp-shim": "^1.5"
     },
     "conflict": {