deps: update dependency com.google.http-client:google-http-client-bom to v1.34.2

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [com.google.http-client:google-http-client-bom](https://togithub.com/googleapis/google-http-java-client) | patch | `1.34.1` -> `1.34.2` |

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### Release Notes

<details>
<summary>googleapis/google-http-java-client</summary>

### [`v1.34.2`](https://togithub.com/googleapis/google-http-java-client/blob/master/CHANGELOG.md#&#8203;1342httpswwwgithubcomgoogleapisgoogle-http-java-clientcomparev1341v1342-2020-02-12)

[Compare Source](https://togithub.com/googleapis/google-http-java-client/compare/v1.34.1...v1.34.2)

</details>

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Author: renovate-bot

pom.xml

@@ -64,7 +64,7 @@
     <api-client.version>1.30.8</api-client.version>
     <google.core.version>1.92.5</google.core.version>
     <gax.version>1.53.1</gax.version>
-    <http-client-bom.version>1.34.1</http-client-bom.version>
+    <http-client-bom.version>1.34.2</http-client-bom.version>
     <guava.version>28.2-android</guava.version>
     <junit.version>4.12</junit.version>
     <google.common-protos.version>1.17.0</google.common-protos.version>