[composer] Set dependencies for 3.1.2 release

Author: Łukasz Serwatka

composer.json

@@ -12,7 +12,7 @@
     ],
     "require": {
         "php": "^7.3",
-        "ezsystems/ezplatform-kernel": "~1.1.0@dev",
+        "ezsystems/ezplatform-kernel": "~1.1.0",
         "netgen/query-translator": "^1.0.2",
         "symfony/http-kernel": "^5.0",
         "symfony/dependency-injection": "^5.0",
@@ -21,7 +21,7 @@
         "symfony/framework-bundle": "^5.0"
     },
     "require-dev": {
-        "ezsystems/doctrine-dbal-schema": "^1.0@dev",
+        "ezsystems/doctrine-dbal-schema": "^1.0",
         "phpunit/phpunit": "^8.2",
         "matthiasnoback/symfony-dependency-injection-test": "^4.1",
         "ezsystems/ezplatform-code-style": "^0.1.0"