GA4 CSP update for Google Signals

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/147024



Merged-by: Doug Stull <dstull@gitlab.com>
Approved-by: Dominic Couture <dcouture@gitlab.com>
Approved-by: Eduardo Bonet <ebonet@gitlab.com>
Approved-by: Doug Stull <dstull@gitlab.com>
Reviewed-by: Doug Stull <dstull@gitlab.com>
Reviewed-by: Eduardo Bonet <ebonet@gitlab.com>
Co-authored-by: Dennis Charukulvanich <dcharukulvanich@gitlab.com>
Co-authored-by: Eduardo Bonet <ebonet@gitlab.com>