go-mod: bump k8s.io/client-go from 0.26.1 to 0.34.1 in /shifter#252

dependabot[bot] wants to merge 1 commit intodevelopgoogle/shifter:developfrom

dependabot/go_modules/shifter/develop/k8s.io/client-go-0.34.1google/shifter:dependabot/go_modules/shifter/develop/k8s.io/client-go-0.34.1Copy head branch name to clipboard