Merge branch '517841-deprecation-notice-cov-guided-fuzz' into 'master'

Deprecation notice for coverage-guided fuzz testing

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/181186



Merged-by: Phillip Wells <pwells@gitlab.com>
Reviewed-by: Phillip Wells <pwells@gitlab.com>
Co-authored-by: Michael Eddington <meddington@gitlab.com>