ci: upgrade runway version to v2.21.1
What
Upgrade Runway version to https://gitlab.com/gitlab-com/gl-infra/platform/runway/runwayctl/-/releases/v2.21.1.
Why
Fixes https://gitlab.com/gitlab-com/gl-infra/platform/runway/docs/-/pipelines/1202066917.
Upgrade Runway version to https://gitlab.com/gitlab-com/gl-infra/platform/runway/runwayctl/-/releases/v2.21.1.
Fixes https://gitlab.com/gitlab-com/gl-infra/platform/runway/docs/-/pipelines/1202066917.