alkimi-user-sync url modification

[VelRaj21]

• Updates the Alkimi user sync redirect URL in static/bidder-info/alkimi.yaml to include the gdpr_consent, gpp, and gpp_sid macros.

  • Aligns Alkimi with current privacy-signal forwarding standards so downstream consent/GPP information is propagated during cookie sync.

  Rationale
  The previous URL forwarded only the GDPR-applies flag and CCPA (us_privacy). Adding gdpr_consent, gpp, and gpp_sid ensures Alkimi receives the full TCF consent string and GPP signals required for compliant user-sync handling. This mirrors the approach taken by other bidders.

  Test plan

  • No adapter or test code changes — macros are rendered by the generic usersync package, not per-adapter code.
  • Existing Alkimi tests (adapters/alkimi/alkimi_test.go, params_test.go, alkimitest/*.json) remain valid; none reference the sync URL.
  • Verify YAML loads correctly: go test ./config/... ./openrtb_ext/...
  • Verify rendered URL contains the new macros at runtime when GDPR/GPP signals are present.

[VelRaj21]

Review required