fix: bump slim/slim from 3.11.0 to 4.11.0

Bumps [slim/slim](https://github.com/slimphp/Slim) from 3.11.0 to 4.11.0.
- [Release notes](https://github.com/slimphp/Slim/releases)
- [Changelog](https://github.com/slimphp/Slim/blob/4.x/CHANGELOG.md)
- [Commits](slimphp/Slim@3.11.0...4.11.0)

---
updated-dependencies:
- dependency-name: slim/slim
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

composer.json

@@ -2,7 +2,7 @@
     "name": "pedrotroller/http-markup",
     "require": {
         "react/promise": "^2.8",
-        "slim/slim": "^3.11",
+        "slim/slim": "^4.11",
         "symfony/process": "^5.1"
     },
     "require-dev": {