Bump slim/slim from 3.12.3 to 4.7.1

Bumps [slim/slim](https://github.com/slimphp/Slim) from 3.12.3 to 4.7.1.
- [Release notes](https://github.com/slimphp/Slim/releases)
- [Changelog](https://github.com/slimphp/Slim/blob/4.x/CHANGELOG.md)
- [Commits](slimphp/Slim@3.12.3...4.7.1)

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

Author: dependabot-preview[bot]

composer.json

@@ -21,7 +21,7 @@
     "ext-xml": "*",
     "adodb/adodb-php": "^5.20",
     "slim/flash": "^0.4.0",
-    "slim/slim": "^3.6",
+    "slim/slim": "^4.7",
     "slim/twig-view": "~2.5.1",
     "symfony/polyfill-php74": "^1.20",
     "symfony/yaml": "^5.1",