Minor - update composer.json

composer.json

@@ -51,7 +51,7 @@
         "doctrine/data-fixtures": "~1.0@dev",
         "doctrine/doctrine-bundle": "~1.9",
         "doctrine/doctrine-fixtures-bundle": "^3.0",
-        "doctrine/doctrine-migrations-bundle": "^1.3",
+        "doctrine/doctrine-migrations-bundle": "~2.0",
 
         "erusev/parsedown": "~1.7",
         "ezyang/htmlpurifier": "~4.10",
@@ -67,9 +67,9 @@
         "symfony/polyfill-apcu": "^1.9",
         "symfony/security-bundle": "^4.0",
         "symfony/swiftmailer-bundle": "^3.2",
-        "symfony/templating" : "*",
+        "symfony/templating" : "^4.0",
         "symfony/translation": "^4.0",
-        "symfony/twig-bundle": "*",
+        "symfony/twig-bundle": "^4.0",
         "symfony/validator": "^4.0",
         "symfony/webpack-encore-bundle": "^1.1",
         "symfony/yaml": "^4.0",
@@ -92,10 +92,10 @@
         "sonata-project/easy-extends-bundle": "~2.5",
         "sonata-project/exporter": "~2.0",
         "sonata-project/intl-bundle": "~2.5",
-        "sonata-project/media-bundle": "3.x-dev",
+        "sonata-project/media-bundle": "~3.0",
         "sonata-project/notification-bundle": "~3.0",
         "sonata-project/page-bundle": "~3.0",
-        "sonata-project/seo-bundle": "~2.0",
+        "sonata-project/seo-bundle": "~2.7",
         "sonata-project/user-bundle": "~4.0",
         "sonata-project/formatter-bundle": "~4.0",
 
@@ -111,7 +111,7 @@
 
         "knplabs/gaufrette": "~0.7",
         "knplabs/doctrine-behaviors": "~1.6",
-        "knplabs/knp-components": "^1.3",
+        "knplabs/knp-components": "~2.0",
 
         "michelf/php-markdown": "~1.8",
         "mopa/bootstrap-bundle": "~3.2",
@@ -152,7 +152,6 @@
         "symfony/requirements-checker": "^1.1",
         "liip/theme-bundle": "^1.6",
         "liip/imagine-bundle": "^2.1",
-        "imagine/imagine": "~0.7",
         "a2lix/translation-form-bundle": "^3.0",
         "oneup/uploader-bundle": "^2.0",
         "overblog/graphql-bundle": "~0.11",