Merge branch 'refactor-scan-policy-base-finder' into 'master'

Renames `*_scan_policies` to `*_security_policies`

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/159867



Merged-by: Andy Schoenen <asoiron@gitlab.com>
Approved-by: Sashi Kumar Kumaresan <skumar@gitlab.com>
Approved-by: Marcos Rocha <mrocha@gitlab.com>
Approved-by: Andy Schoenen <asoiron@gitlab.com>
Co-authored-by: Laura Montemayor <lmontemayor@gitlab.com>