chore(deps): update dependency com.google.cloud:google-cloud-bigquery…

… to v1.123.2 (#863)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [com.google.cloud:google-cloud-bigquery](https://togithub.com/googleapis/java-bigquery) | patch | `1.123.1` -> `1.123.2` |

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### Release Notes

<details>
<summary>googleapis/java-bigquery</summary>

### [`v1.123.2`](https://togithub.com/googleapis/java-bigquery/blob/master/CHANGELOG.md#&#8203;11232-httpswwwgithubcomgoogleapisjava-bigquerycomparev11231v11232-2020-10-23)

[Compare Source](https://togithub.com/googleapis/java-bigquery/compare/v1.123.1...v1.123.2)

</details>

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samples/install-without-bom/pom.xml

@@ -45,7 +45,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-bigquery</artifactId>
-      <version>1.123.1</version>
+      <version>1.123.2</version>
     </dependency>
     <!-- [END bigquery_install_without_bom] -->