fix(deps): update dependency com.google.cloud:google-cloud-pubsub-bom to v1.125.9 (#10007)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-pubsub-bom](https://togithub.com/googleapis/java-pubsub) | `1.125.8` -> `1.125.9` | [![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.cloud:google-cloud-pubsub-bom/1.125.9?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.cloud:google-cloud-pubsub-bom/1.125.9?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.cloud:google-cloud-pubsub-bom/1.125.8/1.125.9?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.cloud:google-cloud-pubsub-bom/1.125.8/1.125.9?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v1.125.9`](https://togithub.com/googleapis/java-pubsub/blob/HEAD/CHANGELOG.md#11259-2023-10-27)

[Compare Source](https://togithub.com/googleapis/java-pubsub/compare/v1.125.8...v1.125.9)

##### Dependencies

-   Update dependency com.google.cloud:google-cloud-bigquery to v2.34.0 ([#&#8203;1795](https://togithub.com/googleapis/java-pubsub/issues/1795)) ([670daf1](https://togithub.com/googleapis/java-pubsub/commit/670daf1c74242dfa54e9747924d094cbcaac4d37))

</details>

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Author: renovate-bot

google-cloud-jar-parent/pom.xml

@@ -39,7 +39,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-pubsub-bom</artifactId>
-        <version>1.125.8</version>
+        <version>1.125.9</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>