build(deps): bump com.google.cloud:spring-cloud-gcp-dependencies (#1878)

Bumps [com.google.cloud:spring-cloud-gcp-dependencies](https://github.com/GoogleCloudPlatform/spring-cloud-gcp) from 5.2.0 to 5.3.0.
- [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@v5.2.0...v5.3.0)

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

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testcontainers-spring-boot-parent/pom.xml

@@ -18,7 +18,7 @@
         <testcontainers.version>1.19.7</testcontainers.version>
         <spring.boot.version>3.2.5</spring.boot.version>
         <spring.cloud.version>2023.0.1</spring.cloud.version>
-        <spring.cloud.gcp.version>5.2.0</spring.cloud.gcp.version>
+        <spring.cloud.gcp.version>5.3.0</spring.cloud.gcp.version>
         <equalsverifier.version>3.16.1</equalsverifier.version>
         <junit-jupiter.version>5.10.2</junit-jupiter.version>
         <spring.cloud.azure.version>5.12.0</spring.cloud.azure.version>