feat(babel): Support new topLevelAwait plugin in babel parser

Author: danez

src/babelParser.js

@@ -42,6 +42,7 @@ function getDefaultPlugins(options: BabelOptions) {
     'optionalChaining',
     ['pipelineOperator', { proposal: 'minimal' }],
     'throwExpressions',
+    'topLevelAwait',
   ];
 }