[composer] Set dependencies for 5.0.0-rc1 release.

Author: runner

composer.json

@@ -8,14 +8,14 @@
     },
     "require": {
         "php": " >=8.3",
-        "ibexa/core": "~5.0.x-dev",
-        "ibexa/design-engine": "~5.0.x-dev",
+        "ibexa/core": "~5.0@rc",
+        "ibexa/design-engine": "~5.0@rc",
         "symfony/http-kernel": "^7.2"
     },
     "require-dev": {
         "ibexa/code-style": "~2.0.0",
-        "ibexa/doctrine-schema": "~5.0.x-dev",
-        "ibexa/rector": "~5.0.x-dev",
+        "ibexa/doctrine-schema": "~5.0@rc",
+        "ibexa/rector": "~5.0@rc",
         "matthiasnoback/symfony-dependency-injection-test": "^5.0",
         "phpunit/phpunit": "^9.6"
     },
@@ -46,4 +46,4 @@
         "allow-plugins": false,
         "sort-packages": true
     }
-}
+}