Fix ignored file list to include JSON based config files

Author: przemyslawzalewski

ignore.js

@@ -1,13 +1,13 @@
 const ignoredFiles = [
   ".all-contributorsrc",
-  ".babelrc.js",
   ".eslintignore",
   ".eslintrc.js",
   ".gitignore",
   ".npmignore",
   ".prettierignore",
   ".prettierrc",
   "addExtensions.js",
+  "babel.config.json",
   "compile.js",
   "document.js",
   "ignore.js",
@@ -19,7 +19,7 @@ const ignoredFiles = [
   "index.ts",
   "index.umd.js",
   "indexReadme.js",
-  "jest.config.js",
+  "jest.config.json",
   "LICENSE",
   "mappings.js",
   "normalizeLineEndings.js",