TASK: Update composer manifest for ~7.0.0

See https://jenkins.neos.io/job/flow-release/282/

composer.json

@@ -16,26 +16,13 @@
         "bin-dir": "bin"
     },
     "require": {
-        "neos/flow": "7.0.x-dev",
-        "neos/welcome": "7.0.x-dev",
-        "neos/cache": "7.0.x-dev",
-        "neos/eel": "7.0.x-dev",
-        "neos/error-messages": "7.0.x-dev",
-        "neos/flow-log": "7.0.x-dev",
-        "neos/fluid-adaptor": "7.0.x-dev",
-        "neos/utility-arrays": "7.0.x-dev",
-        "neos/utility-files": "7.0.x-dev",
-        "neos/utility-mediatypes": "7.0.x-dev",
-        "neos/utility-objecthandling": "7.0.x-dev",
-        "neos/utility-opcodecache": "7.0.x-dev",
-        "neos/utility-pdo": "7.0.x-dev",
-        "neos/utility-schema": "7.0.x-dev",
-        "neos/utility-unicode": "7.0.x-dev",
-        "neos/http-factories": "7.0.x-dev"
+        "neos/flow": "~7.0.0",
+        "neos/welcome": "~7.0.0",
+        "neos/fluid-adaptor": "7.0.x-dev"
     },
     "require-dev": {
-        "neos/kickstarter": "7.0.x-dev",
-        "neos/buildessentials": "7.0.x-dev",
+        "neos/kickstarter": "~7.0.0",
+        "neos/buildessentials": "~7.0.0",
         "neos/behat": "dev-master",
         "phpunit/phpunit": "~9.0",
         "mikey179/vfsstream": "~1.6"