Move ng-mocks to dev dependencies. It's only for testing

Author: tdonohue

package-lock.json

@@ -153,7 +153,6 @@
     "mirador-dl-plugin": "^0.13.0",
     "mirador-share-plugin": "^0.11.0",
     "morgan": "^1.10.0",
-    "ng-mocks": "^14.13.1",
     "ng2-file-upload": "5.0.0",
     "ng2-nouislider": "^2.0.0",
     "ngx-infinite-scroll": "^16.0.0",
@@ -227,6 +226,7 @@
     "karma-jasmine": "~4.0.0",
     "karma-jasmine-html-reporter": "^1.5.0",
     "karma-mocha-reporter": "2.2.5",
+    "ng-mocks": "^14.13.1",
     "ngx-mask": "14.2.4",
     "nodemon": "^2.0.22",
     "postcss": "^8.4",