[backport for 23.2] ci/b2c: move to the shiny new `gfx-ci/ci-tron` repo
We've successfully moved the repo to its new location now that the project is ready for general use.
Update the config to use the new paths.
Backport-of: !25643 (merged)
We've successfully moved the repo to its new location now that the project is ready for general use.
Update the config to use the new paths.
Backport-of: !25643 (merged)