chore: increment patch version to 0.9.4 (#1065)

Author: minherz

README.md

@@ -69,10 +69,7 @@ Read more about Cloud Ops Sandbox and how to use it in the [documentation](docs/
 
 ## Discontinued Functionality
 
-The following functionality has been changed in the recent versions of Cloud
-Ops Sandbox:
-
-### Version 0.9.2
+The following functionality is not available in versions ≥ 0.9:
 
 * Rating service is not a part of the demo application. It has the following effects:
   * Launch does not provision AppEngine services and CloudSQL DB.
@@ -117,7 +114,7 @@ under Apache 2.0. Full license text is available in [LICENSE](LICENSE).
 > **Note**
 > This is not an official Google project. Please, report any issues or feature requests related to this project [here].
 
-[1]: https://console.cloud.google.com/?cloudshell_git_repo=https%3A%2F%2Fgithub.com%2Fgooglecloudplatform%2Fcloud-ops-sandbox&cloudshell_git_branch=0.9.3&cloudshell_tutorial=docs/walkthrough.md
+[1]: https://console.cloud.google.com/?cloudshell_git_repo=https%3A%2F%2Fgithub.com%2Fgooglecloudplatform%2Fcloud-ops-sandbox&cloudshell_git_branch=0.9.4&cloudshell_tutorial=docs/walkthrough.md
 <!-- [tf_badge]: https://github.com/GoogleCloudPlatform/cloud-ops-sandbox/actions/workflows/terraform.yaml/badge.svg
 [cli_badge]: https://github.com/GoogleCloudPlatform/cloud-ops-sandbox/actions/workflows/cli.yaml/badge.svg -->
 [cloud-ops]: (https://cloud.google.com/products/operations)

docs/README.md

@@ -146,7 +146,7 @@ GKE cluster is the core part of the bill. You can see [estimate] costs with
 pricing [calculator].
 
 [1]: https://cloud.google.com/resource-manager/docs/creating-managing-projects#console_1
-[2]: https://console.cloud.google.com/?cloudshell_git_repo=https%3A%2F%2Fgithub.com%2Fgooglecloudplatform%2Fcloud-ops-sandbox&cloudshell_git_branch=0.9.3&cloudshell_tutorial=docs/walkthrough.md
+[2]: https://console.cloud.google.com/?cloudshell_git_repo=https%3A%2F%2Fgithub.com%2Fgooglecloudplatform%2Fcloud-ops-sandbox&cloudshell_git_branch=0.9.4&cloudshell_tutorial=docs/walkthrough.md
 [cloud-ops]: http://cloud.google.com/products/operations
 [ob]: https://github.com/GoogleCloudPlatform/microservices-demo
 [ob-architecture]: https://github.com/GoogleCloudPlatform/microservices-demo#architecture