require maintained PHP in composer.json (#76)

Author: dzuelke

composer.json

@@ -1,9 +1,9 @@
 {
   "require" : {
+    "php": "^8.1",
     "php-di/php-di": "^7.0",
     "slim/slim": "^4.0",
-    "php-di/slim-bridge": "^3.1.0",
-    "slim/psr7": "^1.3.0",
+    "php-di/slim-bridge": "^3.4.1",
     "monolog/monolog": "^3.0",
     "twig/twig": "^3.0",
     "slim/twig-view": "^3.0"