lib: Update all libs

Author: CGNonofr

jest/cssTransform.js

@@ -5,7 +5,7 @@
 
 module.exports = {
   process() {
-    return 'module.exports = {};';
+    return { code: 'module.exports = {};' };
   },
   getCacheKey() {
     // The output is always the same.

jest/fileTransform.js

@@ -2,6 +2,6 @@ module.exports = {
   process(src, filename) {
     const assetFilename = JSON.stringify(filename);
 
-    return `module.exports = ${assetFilename};`;
+    return { code: `module.exports = ${assetFilename};` };
   },
 };