composer(deps-dev): bump ergebnis/composer-normalize from 2.7.1 to 2.8.1

Bumps [ergebnis/composer-normalize](https://github.com/ergebnis/composer-normalize) from 2.7.1 to 2.8.1.
- [Release notes](https://github.com/ergebnis/composer-normalize/releases)
- [Changelog](https://github.com/ergebnis/composer-normalize/blob/main/CHANGELOG.md)
- [Commits](ergebnis/composer-normalize@2.7.1...2.8.1)

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

composer.json

@@ -15,7 +15,7 @@
   },
   "require-dev": {
     "doctrine/coding-standard": "^8.1.0",
-    "ergebnis/composer-normalize": "^2.7.1",
+    "ergebnis/composer-normalize": "^2.8.1",
     "ergebnis/license": "^1.0.0",
     "ergebnis/test-util": "^1.0.0",
     "infection/infection": "^0.15.3",