Update composer requirements

- Update to SilverStripe GraphQL 3

.circleci/config.yml

@@ -32,14 +32,6 @@ jobs:
         - /feature.*/
 
     steps:
-      # Install additional requirements
-      - run:
-          command: |
-            php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
-            php -r "if (hash_file('SHA384', 'composer-setup.php') === '544e09ee996cdf60ece3804abc52599c22b1f40f4323403c44d44fdfdd586475ca9813a858088ffbc1f233e9b180f061') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
-            php composer-setup.php --install-dir=/usr/local/bin --filename=composer
-            php -r "unlink('composer-setup.php');"
-
       - run: composer create-project firesphere/graphql-jwt:dev-master ~/var/www -n
       - run: vendor/bin/sake dev/build
 

composer.json

@@ -7,7 +7,7 @@
     "php": ">=5.6",
     "silverstripe/recipe-core": "^4.0",
     "silverstripe/versioned": "^1.0",
-    "silverstripe/graphql": "^2.0",
+    "silverstripe/graphql": "^3.0",
     "lcobucci/jwt": "^3.2"
   },
   "require-dev": {