deps: update dependency com.google.cloud:google-cloud-bigquery to v2.0.1 (#969)

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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) | `2.0.0` -> `2.0.1` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigquery/2.0.1/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigquery/2.0.1/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigquery/2.0.1/compatibility-slim/2.0.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigquery/2.0.1/confidence-slim/2.0.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v2.0.1`](https://togithub.com/googleapis/java-bigquery/blob/master/CHANGELOG.md#​201-httpswwwgithubcomgoogleapisjava-bigquerycomparev200v201-2021-08-09)

[Compare Source](https://togithub.com/googleapis/java-bigquery/compare/v2.0.0...v2.0.1)

</details>

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samples/install-without-bom/pom.xml

@@ -53,7 +53,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-bigquery</artifactId>
-      <version>2.0.0</version>
+      <version>2.0.1</version>
       <scope>test</scope>
     </dependency>
     <dependency>

samples/snapshot/pom.xml

@@ -53,7 +53,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-bigquery</artifactId>
-      <version>2.0.0</version>
+      <version>2.0.1</version>
       <scope>test</scope>
     </dependency>
     <dependency>

samples/snippets/pom.xml

@@ -65,7 +65,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-bigquery</artifactId>
-      <version>2.0.0</version>
+      <version>2.0.1</version>
       <scope>test</scope>
     </dependency>
     <dependency>