deps: bump libraries-bom from 26.4.0 to 26.5.0 (#1532)

Bumps [libraries-bom](https://github.com/googleapis/java-cloud-bom) from 26.4.0 to 26.5.0.
- [Release notes](https://github.com/googleapis/java-cloud-bom/releases)
- [Changelog](https://github.com/googleapis/java-cloud-bom/blob/main/CHANGELOG.md)
- [Commits](googleapis/java-cloud-bom@v26.4.0...v26.5.0)

---
updated-dependencies:
- dependency-name: com.google.cloud:libraries-bom
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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spring-cloud-gcp-dependencies/pom.xml

@@ -21,7 +21,7 @@
 	</distributionManagement>
 
 	<properties>
-		<gcp-libraries-bom.version>26.4.0</gcp-libraries-bom.version>
+		<gcp-libraries-bom.version>26.5.0</gcp-libraries-bom.version>
 		<cloud-sql-socket-factory.version>1.9.0</cloud-sql-socket-factory.version>
 		<guava.version>31.1-jre</guava.version>
 		<r2dbc-postgres-driver.version>1.0.0.RELEASE</r2dbc-postgres-driver.version>