Update README.md (#585)

Update the dates of planned release for Datastore emulators with Java 21 requirement.

Author: anindyatahsin

README.md

@@ -28,21 +28,21 @@ We have previously removed the `docker-buildx` package from the
 gcloud CLI docker images. For more information about already
 removed packages, see the [announcements on GitHub](https://github.com/GoogleCloudPlatform/cloud-sdk-docker/discussions/categories/announcements?discussions_q=is%3Aopen+category%3AAnnouncements+label%3A3pPackageRemoval).
 
-***May 28, 2025***
+***Jun 20, 2025***
 
-**Support for gcloud firestore and datastore emulators with Java 17 or earlier is ending on June 24, 2025**
+**Support for gcloud firestore and datastore emulators with Java 17 or earlier is ending on July 01, 2025**
 
 > [!WARNING]  
 > The firestore & datastore emulators will require
-Java 21 or later starting with the gcloud release 528.0.0
-(June 24, 2025). After this change, the firestore
+Java 21 or later starting with the gcloud release 529.0.0
+(July 01, 2025). After this change, the firestore
 and datastore emulators will fail to start in environments with Java
 versions prior to 21. To fix this, users of the `:latest`, `:emulators` and
 `:debian_component_based` images can use their own Dockerfile to upgrade to
 Java 21 or later to continue using the latest firestore and
 datastore emulators
 ([examples](https://cloud.google.com/sdk/docs/dockerfile_example#build-your-own-gcloud-docker-image-for-java21)).
-Alternatively the users can pin-to gcloud version `527.0.0` or
+Alternatively the users can pin-to gcloud version `528.0.0` or
 earlier where the prior java versions were supported. For any questions or
 concerns about the change, reach out to the
 [gcloud support team](https://issuetracker.google.com/issues/new?component=187143).