Add new file

data/deprecations/distribution_deprecations_14-3.yml

+- name: "Rename Task Runner pod to Toolbox" # The name of the feature to be deprecated
+  announcement_milestone: "14.2" # The milestone when this feature was first announced as deprecated.
+  removal_milestone: "14.4" # the milestone when this feature is planned to be removed
+  body: | # Do not modify this line, instead modify the lines below.
+    The Task Runner pod is used to execute periodic housekeeping tasks within the GitLab application and is often confused with the GitLab Runner. Thus, [Task Runner will be renamed to Toolbox](https://gitlab.com/groups/gitlab-org/charts/-/epics/25).
+
+    This will result in the rename of the sub-chart: `gitlab/task-runner` to `gitlab/toolbox`. Resulting pods will be named along the lines of `{{ .Release.Name }}-toolbox`, which will often be `gitlab-toolbox`. They will be locatable with the label `app=toolbox`.