SAST_DEFAULT_ANALYZERS is written with default value by SAST Config UI

If you visit the SAST Config UI, make no changes to the form and submit it, the generated MR defines the SAST_DEFAULT_ANALYZERS variable. The intention is that variables which are equal to their default are not written, so as to receive automatic updates via the bundled SAST template.

This is an example MR created as described: https://staging.gitlab.com/secure-team-test/dependency-list-test/-/merge_requests/14