build(deps): bump com.google.cloud:spring-cloud-gcp-dependencies

Bumps [com.google.cloud:spring-cloud-gcp-dependencies](https://github.com/GoogleCloudPlatform/spring-cloud-gcp) from 5.8.0 to 5.9.0.
- [Release notes](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/releases)
- [Changelog](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/blob/main/CHANGELOG.md)
- [Commits](GoogleCloudPlatform/spring-cloud-gcp@v5.8.0...v5.9.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

testcontainers-spring-boot-parent/pom.xml

@@ -18,7 +18,7 @@
         <testcontainers.version>1.20.4</testcontainers.version>
         <spring.boot.version>3.3.5</spring.boot.version>
         <spring.cloud.version>2023.0.4</spring.cloud.version>
-        <spring.cloud.gcp.version>5.8.0</spring.cloud.gcp.version>
+        <spring.cloud.gcp.version>5.9.0</spring.cloud.gcp.version>
         <equalsverifier.version>3.17.4</equalsverifier.version>
         <junit-jupiter.version>5.11.3</junit-jupiter.version>
         <spring.cloud.azure.version>5.18.0</spring.cloud.azure.version>