chore: make generate_index_ts() deterministic (#516)

Fixes googleapis/synthtool#1103
Source-Link: googleapis/synthtool@c3e41da
Post-Processor: gcr.io/repo-automation-bots/owlbot-nodejs:latest@sha256:e37a815333a6f3e14d8532efe90cba8aa0d34210f8c0fdbdd9e6a34dcbe51e96

packages/google-cloud-texttospeech/src/index.ts

@@ -16,13 +16,13 @@
 // ** https://github.com/googleapis/synthtool **
 // ** All changes to this file may be overwritten. **
 
-import * as v1beta1 from './v1beta1';
 import * as v1 from './v1';
+import * as v1beta1 from './v1beta1';
 
 const TextToSpeechClient = v1.TextToSpeechClient;
 type TextToSpeechClient = v1.TextToSpeechClient;
 
-export {v1beta1, v1, TextToSpeechClient};
-export default {v1beta1, v1, TextToSpeechClient};
+export {v1, v1beta1, TextToSpeechClient};
+export default {v1, v1beta1, TextToSpeechClient};
 import * as protos from '../protos/protos';
 export {protos};