fix: use correct version for x-goog-api-client header

Author: yoshi-automation

src/v1/speech_client.js

@@ -82,7 +82,7 @@ class SpeechClient {
 
     // Determine the client header string.
     const clientHeader = [
-      `gl-node/${process.version}`,
+      `gl-node/${process.versions.node}`,
       `grpc/${gaxGrpc.grpcVersion}`,
       `gax/${gax.version}`,
       `gapic/${VERSION}`,

src/v1p1beta1/speech_client.js

@@ -82,7 +82,7 @@ class SpeechClient {
 
     // Determine the client header string.
     const clientHeader = [
-      `gl-node/${process.version}`,
+      `gl-node/${process.versions.node}`,
       `grpc/${gaxGrpc.grpcVersion}`,
       `gax/${gax.version}`,
       `gapic/${VERSION}`,

synth.metadata

@@ -1,19 +1,19 @@
 {
-  "updateTime": "2019-08-02T11:26:18.113088Z",
+  "updateTime": "2019-08-21T11:23:39.690515Z",
   "sources": [
     {
       "generator": {
         "name": "artman",
-        "version": "0.32.0",
-        "dockerImage": "googleapis/artman@sha256:6929f343c400122d85818195b18613330a12a014bffc1e08499550d40571479d"
+        "version": "0.34.0",
+        "dockerImage": "googleapis/artman@sha256:38a27ba6245f96c3e86df7acb2ebcc33b4f186d9e475efe2d64303aec3d4e0ea"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "3a40d3a5f5e5a33fd49888a8a33ed021f65c0ccf",
-        "internalRef": "261297518"
+        "sha": "11592a15391951348a64f5c303399733b1c5b3b2",
+        "internalRef": "264425502"
       }
     },
     {