Merge branch 'nweinshenker/claude-3-5-sonnet-v2-support' into 'master'

Support claude 3.5 Sonnet new model version

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/173134



Merged-by: Gosia Ksionek <mksionek@gitlab.com>
Approved-by: Gosia Ksionek <mksionek@gitlab.com>
Co-authored-by: Nathan Weinshenker <nweinshenker@gitlab.com>