deps: update dependency com.google.cloud:google-cloud-bigquery to v2.…

…1.5 (#1279)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-bigquery](https://togithub.com/googleapis/java-bigquery) | `2.1.4` -> `2.1.5` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigquery/2.1.5/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigquery/2.1.5/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigquery/2.1.5/compatibility-slim/2.1.4)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigquery/2.1.5/confidence-slim/2.1.4)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v2.1.5`](https://togithub.com/googleapis/java-bigquery/blob/master/CHANGELOG.md#&#8203;215-httpswwwgithubcomgoogleapisjava-bigquerycomparev214v215-2021-08-31)

[Compare Source](https://togithub.com/googleapis/java-bigquery/compare/v2.1.4...v2.1.5)

</details>

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pom.xml

@@ -83,7 +83,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-bigquery</artifactId>
-        <version>2.1.4</version>
+        <version>2.1.5</version>
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>