Update depenedencies in composer file to PHP8+

Author: Potherca

composer.json

@@ -17,12 +17,12 @@
   "license": "MIT",
   "name": "pdsinterop/solid-crud",
   "require": {
-    "php": "^7.3",
+    "php": "^8.0",
     "ext-mbstring": "*",
-    "laminas/laminas-diactoros": "^2.8",
+    "laminas/laminas-diactoros": "^2.14",
     "league/flysystem": "^1.0",
-    "mjrider/flysystem-factory": "^0.5",
-    "pdsinterop/flysystem-rdf": "^0.4",
+    "mjrider/flysystem-factory": "^0.7",
+    "pdsinterop/flysystem-rdf": "^0.5",
     "psr/http-factory": "^1.0",
     "psr/http-message": "^1.0",
     "textalk/websocket": "^1.5"