Remove bridge-specific dependencies from platform require-dev

Move async-aws/bedrock-runtime, codewithkyrian/transformers,
google/auth, symfony/ai-agent, and phpstan/phpstan-symfony to
their respective bridge packages.

Author: OskarStark

src/platform/composer.json

@@ -61,12 +61,8 @@
         "symfony/uid": "^7.3|^8.0"
     },
     "require-dev": {
-        "async-aws/bedrock-runtime": "^0.1|^1.0",
-        "codewithkyrian/transformers": "^0.6.2",
-        "google/auth": "^1.47",
         "phpstan/phpstan": "^2.1.17",
         "phpstan/phpstan-strict-rules": "^2.0",
-        "phpstan/phpstan-symfony": "^2.0.6",
         "phpunit/phpunit": "^11.5.46",
         "symfony/cache": "^7.3|^8.0",
         "symfony/console": "^7.3|^8.0",
@@ -90,10 +86,6 @@
         }
     },
     "config": {
-        "allow-plugins": {
-            "codewithkyrian/platform-package-installer": true,
-            "codewithkyrian/transformers-libsloader": true
-        },
         "sort-packages": true
     },
     "extra": {