Docs: Add Google Cloud to Secret Detection auto-response

doc/user/application_security/secret_detection/automatic_response.md

@@ -22,6 +22,7 @@ GitLab supports automatic response for the following types of secrets:
 | ----- | --- | --- | --- |
 | GitLab [Personal access tokens](../../profile/personal_access_tokens.md) | Immediately revoke token, send email to owner | ✅ | ✅ [15.9 and later](https://gitlab.com/gitlab-org/gitlab/-/issues/371658) |
 | Amazon Web Services (AWS) [IAM access keys](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_access-keys.html) | Notify AWS | ✅ | ⚙ |
+| Google Cloud [service account keys](https://cloud.google.com/iam/docs/best-practices-for-managing-service-account-keys), [API keys](https://cloud.google.com/docs/authentication/api-keys), and [OAuth client secrets](https://support.google.com/cloud/answer/6158849#rotate-client-secret) | Notify Google Cloud | ✅ | ⚙ |
 
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