Update dev dependencies and add new packages for Amp v3

Updated dependencies to support PHP 8.1 and newer versions of Amp packages, including `phpmetrics`, `psalm`, and `amphp/byte-stream`. Introduced additional Amp libraries like `amphp/cache`, `amphp/dns`, and others to enhance async capabilities. Adjusted project configurations accordingly.

vendor-bin/tools/composer.json

@@ -2,10 +2,10 @@
     "require-dev": {
         "doctrine/coding-standard": "^12.0",
         "phpmd/phpmd": "^2.9",
-        "phpmetrics/phpmetrics": "^2.7",
+        "phpmetrics/phpmetrics": "^v2.7.4 || ^v3.0-RC",
         "phpstan/phpstan": "^2.0",
         "squizlabs/php_codesniffer": "^3.5",
-        "vimeo/psalm": "^5.26"
+        "vimeo/psalm": "^6.2"
     },
     "config": {
         "allow-plugins": {