Announce apiFuzzingCiConfigurationCreate deprecation

data/deprecations/14-6-remove-api-fuzzing-ci-configuration-create-mutation.yml

+- name: "apiFuzzingCiConfigurationCreate GraphQL mutation"
+  announcement_milestone: "14.6"
+  announcement_date: "2021-12-22"
+  removal_milestone: "15.0"
+  body: |
+    The API Fuzzing configuration snippet is now being generated client-side and does not require an
+    API request anymore. We are therefore deprecating the `apiFuzzingCiConfigurationCreate` mutation
+    which isn't being used in GitLab anymore.
+  stage: Secure
+  tiers: Ultimate
+  issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/333233
+  documentation_url: https://docs.gitlab.com/ee/user/application_security/api_fuzzing/#web-api-fuzzing-configuration-form
+  removal_date: "2022-05-22"

doc/update/deprecations.md

@@ -247,3 +247,11 @@ We are changing how the date filter works in Value Stream Analytics. Instead of
 If you monitor Value Stream Analytics metrics and rely on the date filter, to avoid losing data, you must save the data prior to this change.
 
 Announced: 2021-11-22
+
+### apiFuzzingCiConfigurationCreate GraphQL mutation
+
+The API Fuzzing configuration snippet is now being generated client-side and does not require an
+API request anymore. We are therefore deprecating the `apiFuzzingCiConfigurationCreate` mutation
+which isn't being used in GitLab anymore.
+
+Announced: 2021-12-22