feat(Docker): Upgrade to PHP 8.5.0RC3 with native ext-uri support

BREAKING CHANGE: Requires PHP 8.5.0RC3

Changes:
- Update Docker base image from php:8.4-fpm to php:8.5.0RC3-fpm
- Enable ext-uri for native WHATWG URL parsing support
- Update composer.json PHP requirement from ^8.4 to ^8.5
- Add ext-uri as required extension in composer.json
- Move URL classes from Url.php85/ to Url/ directory (now compatible)
- Remove temporary PHP 8.4 compatibility workarounds

Benefits:
- Native URL parsing with Uri\WhatWg\Url class
- Better performance for URL operations
- Future-proof with latest PHP features
- Eliminates PHP version compatibility issues

composer.json

@@ -6,7 +6,10 @@
     "autoload": {
         "psr-4": {
             "App\\": "src/"
-        }
+        },
+        "exclude-from-classmap": [
+            "src/**/*.php85/**"
+        ]
     },
     "autoload-dev": {
         "psr-4": {
@@ -32,7 +35,7 @@
         }
     },
     "require": {
-      "php": "^8.4 || ^8.5",
+      "php": "^8.5",
       "predis/predis": "^3.0",
       "ext-dom": "*",
       "ext-libxml": "*",
@@ -44,9 +47,9 @@
       "ext-pdo": "*",
       "ext-openssl": "*",
       "ext-bcmath": "*",
-      "ext-uri": "*",
       "ext-sodium": "*",
-      "ext-posix": "*"
+      "ext-posix": "*",
+      "ext-uri": "*"
     },
     "suggest": {
       "ext-apcu": "For better caching performance (not yet available for PHP 8.5)",