[composer] Set dependencies for 4.0.0-rc1 release.

composer.json

@@ -25,7 +25,7 @@
     },
     "require": {
         "php": "^7.4 || ^8.0",
-        "ibexa/core": "^4.0@dev",
+        "ibexa/core": "^4.0@rc",
         "jms/translation-bundle": "^1.5",
         "symfony/dependency-injection": "^5.0",
         "symfony/http-kernel": "^5.0",
@@ -44,14 +44,14 @@
         "symfony/security-http": "^5.0"
     },
     "require-dev": {
-        "ibexa/ci-scripts": "^0.2@dev",
-        "ibexa/doctrine-schema": "^4.0@dev",
-        "ibexa/search": "^4.0@dev",
-        "ibexa/content-forms": "^4.0@dev",
-        "ibexa/design-engine": "^4.0@dev",
-        "ibexa/http-cache": "^4.0@dev",
-        "ibexa/fieldtype-richtext": "^4.0@dev",
-        "ibexa/rest": "^4.0@dev",
+        "ibexa/ci-scripts": "^0.2@rc",
+        "ibexa/doctrine-schema": "^4.0@rc",
+        "ibexa/search": "^4.0@rc",
+        "ibexa/content-forms": "^4.0@rc",
+        "ibexa/design-engine": "^4.0@rc",
+        "ibexa/http-cache": "^4.0@rc",
+        "ibexa/fieldtype-richtext": "^4.0@rc",
+        "ibexa/rest": "^4.0@rc",
         "friendsofphp/php-cs-fixer": "^3.0",
         "ibexa/code-style": "^1.0",
         "phpunit/phpunit": "^8.2",