add broccoli-file-creator to dependencies not devDependencies

package.json

@@ -22,6 +22,7 @@
   },
   "dependencies": {
     "broccoli-concat": "^3.7.1",
+    "broccoli-file-creator": "^2.1.1",
     "broccoli-funnel": "^2.0.1",
     "broccoli-merge-trees": "^3.0.1",
     "broccoli-plugin": "^1.3.1",
@@ -42,7 +43,6 @@
   "devDependencies": {
     "body-parser": "^1.18.3",
     "broccoli-asset-rev": "^3.0.0",
-    "broccoli-file-creator": "^1.1.1",
     "broccoli-test-helper": "^1.5.0",
     "chai": "^4.1.2",
     "chai-fs": "^2.0.0",

yarn.lock

@@ -1858,6 +1858,14 @@ broccoli-file-creator@^1.1.1:
     broccoli-plugin "^1.1.0"
     mkdirp "^0.5.1"
 
+broccoli-file-creator@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/broccoli-file-creator/-/broccoli-file-creator-2.1.1.tgz#7351dd2496c762cfce7736ce9b49e3fce0c7b7db"
+  integrity sha512-YpjOExWr92C5vhnK0kmD81kM7U09kdIRZk9w4ZDCDHuHXW+VE/x6AGEOQQW3loBQQ6Jk+k+TSm8dESy4uZsnjw==
+  dependencies:
+    broccoli-plugin "^1.1.0"
+    mkdirp "^0.5.1"
+
 broccoli-filter@^1.2.2, broccoli-filter@^1.2.3:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/broccoli-filter/-/broccoli-filter-1.3.0.tgz#71e3a8e32a17f309e12261919c5b1006d6766de6"