We're publishing updated schemas only to the mozilla-nimbus-schemas
package now, so we need to vendor them from there instead of
mozilla-nimbus-shared. Additionally, since the
github.com/mozilla/experimenter repo vendors the actual JSONSchema
files, we don't have to side-step the vendoring process with a custom
script and can use it how it was intended.
This updates us to mozilla-nimbus-schemas v2024.11.5.
Differential Revision: https://phabricator.services.mozilla.com/D227867
037c77a191