chore(deps): update dependency ember-cli-code-coverage to v3

Author: renovate[bot]

package.json

@@ -47,7 +47,7 @@
     "ember-can": "^4.2.0",
     "ember-cli": "~4.11.0",
     "ember-cli-babel": "^7.26.10",
-    "ember-cli-code-coverage": "^2.0.0",
+    "ember-cli-code-coverage": "^3.1.0",
     "ember-cli-content-security-policy": "^2.0.3",
     "ember-cli-dependency-checker": "^3.2.0",
     "ember-cli-dropzonejs": "^1.3.6",