fix: do not import the whole google-gax from proto JS (#1553) (#923)

fix: use google-gax v3.3.0
Source-Link: googleapis/synthtool@c73d112
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest@sha256:b15a6f06cc06dcffa11e1bebdf1a74b6775a134aac24a0f86f51ddf728eb373e

Author: gcf-owl-bot[bot]

packages/google-cloud-speech/package.json

@@ -48,7 +48,7 @@
   "dependencies": {
     "@google-cloud/common": "^4.0.0",
     "@types/pumpify": "^1.4.1",
-    "google-gax": "^3.1.2",
+    "google-gax": "^3.3.0",
     "pumpify": "^2.0.0",
     "stream-events": "^1.0.4",
     "uuid": "^8.3.2"