deps: update dependency com.google.cloud:google-cloud-datastore-bom to v2.17.6 (#6317)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-datastore-bom](https://github.com/googleapis/java-datastore) | `2.17.5` -> `2.17.6` | [![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.cloud:google-cloud-datastore-bom/2.17.6?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.cloud:google-cloud-datastore-bom/2.17.6?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.cloud:google-cloud-datastore-bom/2.17.5/2.17.6?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.cloud:google-cloud-datastore-bom/2.17.5/2.17.6?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/java-datastore (com.google.cloud:google-cloud-datastore-bom)</summary>

### [`v2.17.6`](https://github.com/googleapis/java-datastore/blob/HEAD/CHANGELOG.md#2176-2023-11-30)

[Compare Source](https://github.com/googleapis/java-datastore/compare/v2.17.5...v2.17.6)

##### Bug Fixes

-   Remove deprecated `databaseId` field in DatastoreOptions ([#&#8203;1237](https://github.com/googleapis/java-datastore/issues/1237)) ([05e25e5](https://github.com/googleapis/java-datastore/commit/05e25e5d31f72f9cdedbb5efa85c64b55ccbc405))

##### Dependencies

-   Update dependency com.google.cloud:google-cloud-shared-dependencies to v3.20.0 ([#&#8203;1247](https://github.com/googleapis/java-datastore/issues/1247)) ([c4e3533](https://github.com/googleapis/java-datastore/commit/c4e3533fe357827cc25d0f029e5a83ced31db12a))
-   Update dependency org.junit.vintage:junit-vintage-engine to v5.10.1 ([#&#8203;1230](https://github.com/googleapis/java-datastore/issues/1230)) ([05c7fc6](https://github.com/googleapis/java-datastore/commit/05c7fc69d52f5a9026a6529f638fe6164860e8f9))

</details>

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Author: renovate-bot

google-cloud-bom/pom.xml

@@ -193,7 +193,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-datastore-bom</artifactId>
-        <version>2.17.5</version>
+        <version>2.17.6</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>