[composer] Set dependencies for 4.0.0-rc2 release.

Author: Łukasz Serwatka

composer.json

@@ -19,11 +19,11 @@
     "require": {
         "php": "^7.4 || ^8.0",
         "ext-json": "*",
-        "ibexa/admin-ui": "^4.0@dev",
-        "ibexa/content-forms": "^4.0@dev",
-        "ibexa/graphql": "^4.0@dev",
-        "ibexa/rest": "^4.0@dev",
-        "ibexa/core": "^4.0@dev",
+        "ibexa/admin-ui": "^4.0@rc",
+        "ibexa/content-forms": "^4.0@rc",
+        "ibexa/graphql": "^4.0@rc",
+        "ibexa/rest": "^4.0@rc",
+        "ibexa/core": "^4.0@rc",
         "symfony/dependency-injection": "^5.0",
         "symfony/expression-language": "^5.0",
         "symfony/event-dispatcher": "^5.0",
@@ -48,12 +48,12 @@
         }
     },
     "require-dev": {
-        "ibexa/doctrine-schema": "^4.0@dev",
-        "ibexa/design-engine": "^4.0@dev",
-        "ibexa/fieldtype-richtext": "^4.0@dev",
-        "ibexa/search": "^4.0@dev",
-        "ibexa/user": "^4.0@dev",
-        "ibexa/http-cache": "^4.0@dev",
+        "ibexa/doctrine-schema": "^4.0@rc",
+        "ibexa/design-engine": "^4.0@rc",
+        "ibexa/fieldtype-richtext": "^4.0@rc",
+        "ibexa/search": "^4.0@rc",
+        "ibexa/user": "^4.0@rc",
+        "ibexa/http-cache": "^4.0@rc",
         "phpspec/phpspec": "^7.1",
         "ibexa/code-style": "^1.0",
         "friendsofphp/php-cs-fixer": "^3.0"
@@ -73,4 +73,4 @@
             "composer/package-versions-deprecated": true
         }
     }
-}
+}