chore(deps): bump Mago to 1.15.3 and widen constraint to ^1

- Set carthage-software/mago to ^1 in composer.json
- Refresh composer.lock (Mago 1.13.3 -> 1.15.3 and related dev dependency updates)

Author: lemmon

composer.json

@@ -21,7 +21,7 @@
         "php": "^8.3"
     },
     "require-dev": {
-        "carthage-software/mago": "^1.8",
+        "carthage-software/mago": "^1",
         "ergebnis/composer-normalize": "^2.48",
         "pestphp/pest": "^4.3",
         "phpstan/phpstan": "^2.1",