Move ember-data from peerDependencies to dependencies

Author: erikap

package.json

@@ -29,9 +29,6 @@
     "test:ember": "ember test",
     "test:ember-compatibility": "ember try:each"
   },
-  "peerDependencies": {
-    "ember-data": ">=3.28.0"
-  },
   "dependencies": {
     "ember-auto-import": "^1.12.0",
     "ember-cli-babel": "^7.26.10",
@@ -58,6 +55,7 @@
     "ember-cli-sri": "^2.1.1",
     "ember-cli-terser": "^4.0.2",
     "ember-cli-update": "^0.33.2",
+    "ember-data": ">=3.28.0",
     "ember-disable-prototype-extensions": "^1.1.3",
     "ember-export-application-global": "^2.0.1",
     "ember-load-initializers": "^2.1.2",