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

….3.9 (#5202)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-tasks-bom](https://togithub.com/googleapis/java-tasks) | `2.3.8` -> `2.3.9` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-tasks-bom/2.3.9/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-tasks-bom/2.3.9/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-tasks-bom/2.3.9/compatibility-slim/2.3.8)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-tasks-bom/2.3.9/confidence-slim/2.3.8)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v2.3.9`](https://togithub.com/googleapis/java-tasks/blob/HEAD/CHANGELOG.md#&#8203;239-httpsgithubcomgoogleapisjava-taskscomparev238v239-2022-09-21)

[Compare Source](https://togithub.com/googleapis/java-tasks/compare/v2.3.8...v2.3.9)

##### Dependencies

-   Update dependency org.junit.vintage:junit-vintage-engine to v5.9.1 ([#&#8203;756](https://togithub.com/googleapis/java-tasks/issues/756)) ([261ae44](https://togithub.com/googleapis/java-tasks/commit/261ae44c5a3acf26f7afe6d3f6727d4ccb55a56c))

</details>

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google-cloud-bom/pom.xml

@@ -803,7 +803,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-tasks-bom</artifactId>
-        <version>2.3.8</version>
+        <version>2.3.9</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>