message: docs(docs-infra): remove deprecated `Buffer` usage from stackblitz builder
  Fixes
  PR Close
diff: @@ -221,9 +221,7 @@ class StackblitzBuilder {
  _encodeBase64(file) {
  // read binary data
  - var bitmap = fs.readFileSync(file);
  - // convert binary data to base64 encoded string
  - return Buffer(bitmap).toString('base64');
  + return fs.readFileSync(file, { encoding: 'base64' });
  }
  _existsSync(filename) {
  