release 1.3.0 (#49)

* release 1.3.0

## Features

In this minor release we updated some protos used by `v1p1beta1` endpoint (added optional `metadata` field to `RecognitionConfig` message). There is no need to change any existing code. Also, `v1` endpoint is still default. If you want to try using the new `v1p1beta1` endpoint, you need to request it in your code:
```js
const speech = require('@google-cloud/nodejs-speech).v1p1beta1;
```

* updating dependency in samples/package.json

* locks. again.

Author: alexander-fenster

speech/package-lock.json

@@ -12,7 +12,7 @@
     "test": "repo-tools test run --cmd ava -- -T 20s --verbose system-test/*.test.js"
   },
   "dependencies": {
-    "@google-cloud/speech": "1.2.0",
+    "@google-cloud/speech": "1.3.0",
     "@google-cloud/storage": "1.4.0",
     "node-record-lpcm16": "0.3.0",
     "yargs": "10.0.3"