Update deprecation notice

data/deprecations/14-5-certificate-based-integration-with-kubernetes.yml

 - name: "Certificate-based integration with Kubernetes"
   announcement_milestone: "14.5" # MIGHT CHANGE IF WE RELEASE THE ANNOUNCEMENT BLOG POST BEFORE THE 22ND
-  announcement_date: "2021-11-22" # UPDATE WITH THE BLOG POST'S PUBLISHING DATE
-  removal_milestone: "15.0" # The milestone when this feature is planned to be removed
+  announcement_date: "2021-11-15"
+  removal_milestone: "15.0"
   body: |
     We are deprecating the certificate-based integration with Kubernetes and the features that rely on it.
     The timeline of removal of the integration from the product is not yet planned and we will communicate

doc/update/deprecations.md

@@ -78,7 +78,7 @@ For updates and details, follow this [epic](https://gitlab.com/groups/gitlab-org
 For a more robust, secure, forthcoming, and reliable integration with Kubernetes, we recommend the use of the
 [Kubernetes Agent](https://docs.gitlab.com/ee/user/clusters/agent/) to connect Kubernetes clusters with GitLab.
 
-Announced: 2021-11-22
+Announced: 2021-11-15
 
 ### Converting an instance (shared) runner to a project (specific) runner is deprecated