chore(deps): update dependency com.google.cloud:google-cloud-datastore to v2.28.1 (#1838)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-datastore](https://redirect.github.com/googleapis/java-datastore) | `2.27.2` -> `2.28.1` | [![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.cloud:google-cloud-datastore/2.28.1?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.cloud:google-cloud-datastore/2.28.1?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.cloud:google-cloud-datastore/2.27.2/2.28.1?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.cloud:google-cloud-datastore/2.27.2/2.28.1?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)</summary>

### [`v2.28.1`](https://redirect.github.com/googleapis/java-datastore/blob/HEAD/CHANGELOG.md#2281-2025-05-06)

[Compare Source](https://redirect.github.com/googleapis/java-datastore/compare/v2.28.0...v2.28.1)

##### Dependencies

-   Update dependency com.google.cloud:sdk-platform-java-config to v3.47.0 ([#&#8203;1841](https://redirect.github.com/googleapis/java-datastore/issues/1841)) ([ac393e6](https://redirect.github.com/googleapis/java-datastore/commit/ac393e61e517d30b534be3e99070c210081c4f0b))
-   Update googleapis/sdk-platform-java action to v2.57.0 ([#&#8203;1842](https://redirect.github.com/googleapis/java-datastore/issues/1842)) ([0745906](https://redirect.github.com/googleapis/java-datastore/commit/0745906bbdd8819ac2ccaafa301c8f4b4fd20be4))

### [`v2.28.0`](https://redirect.github.com/googleapis/java-datastore/blob/HEAD/CHANGELOG.md#2280-2025-04-29)

[Compare Source](https://redirect.github.com/googleapis/java-datastore/compare/v2.27.2...v2.28.0)

##### Features

-   Java datastore gapic upgrade ([#&#8203;1824](https://redirect.github.com/googleapis/java-datastore/issues/1824)) ([a296d43](https://redirect.github.com/googleapis/java-datastore/commit/a296d43724c57aba6a69ebed249261e3d367d625))

</details>

---

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Author: renovate-bot

samples/install-without-bom/pom.xml

@@ -29,7 +29,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-datastore</artifactId>
-      <version>2.27.2</version>
+      <version>2.28.1</version>
     </dependency>
     <!-- [END datastore_install_without_bom] -->