Bump spring-cloud-gcp-storage from 2.0.3 to 2.0.4 (#615)

Bumps [spring-cloud-gcp-storage](https://github.com/GoogleCloudPlatform/spring-cloud-gcp) from 2.0.3 to 2.0.4.
- [Release notes](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/releases)
- [Changelog](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/blob/main/CHANGELOG.adoc)
- [Commits](GoogleCloudPlatform/spring-cloud-gcp@v2.0.3...v2.0.4)

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

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spring-content-gcs/pom.xml

@@ -22,7 +22,7 @@
  		<dependency>
  			<groupId>com.google.cloud</groupId>
  			<artifactId>spring-cloud-gcp-storage</artifactId>
- 			<version>2.0.3</version>
+ 			<version>2.0.4</version>
  		</dependency>
  		<dependency>
 		    <groupId>com.google.cloud</groupId>