deps: update dependency com.google.cloud:google-cloud-bigtable-bom to v2.30.0 (#6328)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-bigtable-bom](https://togithub.com/googleapis/java-bigtable) | `2.29.1` -> `2.30.0` | [![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.cloud:google-cloud-bigtable-bom/2.30.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.cloud:google-cloud-bigtable-bom/2.30.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.cloud:google-cloud-bigtable-bom/2.29.1/2.30.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.cloud:google-cloud-bigtable-bom/2.29.1/2.30.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v2.30.0`](https://togithub.com/googleapis/java-bigtable/blob/HEAD/CHANGELOG.md#2300-2023-12-05)

[Compare Source](https://togithub.com/googleapis/java-bigtable/compare/v2.29.1...v2.30.0)

##### Features

-   Client sends routing cookie back to server ([#&#8203;1888](https://togithub.com/googleapis/java-bigtable/issues/1888)) ([4c73abd](https://togithub.com/googleapis/java-bigtable/commit/4c73abd2f4a07808b591dd9178e87715d2f3008d))

##### Dependencies

-   Update dependency org.junit.vintage:junit-vintage-engine to v5.10.1 ([#&#8203;1990](https://togithub.com/googleapis/java-bigtable/issues/1990)) ([7ad70e3](https://togithub.com/googleapis/java-bigtable/commit/7ad70e3abc1af7dfab715386978bf14f02b34e5d))
-   Update shared dependencies ([#&#8203;2016](https://togithub.com/googleapis/java-bigtable/issues/2016)) ([4e49dff](https://togithub.com/googleapis/java-bigtable/commit/4e49dffa72db8dd04e75ca86178d875fab6f566b))

</details>

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Author: renovate-bot

google-cloud-bom/pom.xml

@@ -186,7 +186,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-bigtable-bom</artifactId>
-        <version>2.29.1</version>
+        <version>2.30.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>