Bump google-cloud-datastore from 2.2.2 to 2.4.0 in /modules/gcloud

Bumps [google-cloud-datastore](https://github.com/googleapis/java-datastore) from 2.2.2 to 2.4.0.
- [Release notes](https://github.com/googleapis/java-datastore/releases)
- [Changelog](https://github.com/googleapis/java-datastore/blob/main/CHANGELOG.md)
- [Commits](googleapis/java-datastore@v2.2.2...v2.4.0)

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

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

Author: dependabot[bot]

modules/gcloud/build.gradle

@@ -3,7 +3,7 @@ description = "Testcontainers :: GCloud"
 dependencies {
     api project(':testcontainers')
 
-    testImplementation 'com.google.cloud:google-cloud-datastore:2.2.2'
+    testImplementation 'com.google.cloud:google-cloud-datastore:2.4.0'
     testImplementation 'com.google.cloud:google-cloud-firestore:3.0.21'
     testImplementation 'com.google.cloud:google-cloud-pubsub:1.115.1'
     testImplementation 'com.google.cloud:google-cloud-spanner:6.20.0'