Merge branch '16-9-deprecate-python-3.9-in-sca' into 'master'

Deprecate Python 3.9 in SCA

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/144283



Merged-by: Phillip Wells <pwells@gitlab.com>
Approved-by: John Crowley <jcrowley@gitlab.com>
Approved-by: Phillip Wells <pwells@gitlab.com>
Co-authored-by: Olivier Gonzalez <ogonzalez@gitlab.com>