Dynamic Analysis 17.0 deprecations, removals and breaking changes
### Problem to solve
The next major release is always there too quickly, let's make sure we're prepared for %"17.0"!
### Deprecation issues
* [ ] https://gitlab.com/gitlab-org/gitlab/-/issues/428112+
* [ ] https://gitlab.com/gitlab-org/gitlab/-/issues/430966+
### Removal issues
* [ ] Remove the ability to use a selector with no type (deprecated since 15.8)
### Candidates to be discussed
| Idea | Action |
|------|--------|
| Stop publishing to gitlab-org/security-products/api-fuzzing | [issue](https://gitlab.com/gitlab-org/gitlab/-/issues/334928 "Stop publishing to gitlab-org/security-products/api-fuzzing") |
| Remove the "none provided" selector type for fields that are selectors. This defaults to id, name or css selector search. This makes scans slower and makes it harder to investigate problems with authenticated scans. Deprecated since 15.8. (see https://docs.gitlab.com/ee/user/application_security/dast/authentication.html#finding-an-elements-selector) | [issue](https://gitlab.com/gitlab-org/gitlab/-/issues/431477 "Require users to enter a selector type") |
| Should we consolidate base images for Browserker/DAST? | [epic](https://gitlab.com/groups/gitlab-org/-/epics/11933 "Release the DAST Browser-based analyzer without the DAST Proxy-based analyzer") |
| @erran Should we remove the separate container images used for BAS? | [epic](https://gitlab.com/groups/gitlab-org/-/epics/11790 "Release Breach and Attack Simulation and DAST as a single Docker image") |
| Replace `DAST_BROWSER_` prefix with `DAST_` for configuration variables | [issue](https://gitlab.com/gitlab-org/gitlab/-/issues/431481 "Replace DAST_BROWSER_ prefix with DAST_ on CI/CD variables") |
| Review configuration variables to make sure they have a sensible name | [issue](https://gitlab.com/gitlab-org/gitlab/-/issues/431485 "Review and rename configuration variables for clarity") |
| Remove `Via-scanner` header, it's not useful once Proxy-based ZAP is removed | [issue](https://gitlab.com/gitlab-org/gitlab/-/issues/431482 "Remove the `Via-scanner` header") |
| Deprecate `DAST_BROWSER_ACTION_STABILITY_TIMEOUT` CI/CD variable | [issue](https://gitlab.com/gitlab-org/gitlab/-/issues/431488 "Deprecate `DAST_BROWSER_ACTION_STABILITY_TIMEOUT` CI/CD variable") |
epic