Use plain old Guzzle and system CA to download PHPStan Pro

Author: ondrejmirtes

composer.json

@@ -8,7 +8,6 @@
 		"php": "^8.2",
 		"composer-runtime-api": "^2.0",
 		"clue/ndjson-react": "^1.0",
-		"composer/ca-bundle": "^1.2",
 		"composer/semver": "^3.4",
 		"composer/xdebug-handler": "^3.0.3",
 		"fidry/cpu-core-counter": "^1.2",
@@ -29,12 +28,9 @@
 		"ondrejmirtes/php-merge": "^4.1",
 		"phpstan/php-8-stubs": "0.4.34",
 		"phpstan/phpdoc-parser": "2.3.2",
-		"psr/http-message": "^1.1",
-		"react/async": "^3",
+		"guzzlehttp/guzzle": "^7.9",
 		"react/child-process": "^0.7",
-		"react/dns": "^1.10",
 		"react/event-loop": "^1.2",
-		"react/http": "^1.1",
 		"react/promise": "^3.2",
 		"react/socket": "^1.3",
 		"react/stream": "^1.1",