Update k/k to go1.14.4

[justaugustus]

What would you like to be added

(Breaking out the go1.14 bumps from #1134)

• kube-cross bump: kube-cross: Update to go1.14.1 #1208, kube-cross: Update to go1.14.2 #1246, kube-cross: Build v1.14.4-2 and v1.13.12-2 images #1372
• image promotion: build-image: Promote kube-cross v1.14.1-1 image k8s.io#687, build-image: Promote kube-cross v1.14.2-1 image k8s.io#765, build-image: Promote kube-cross:v1.14.4-2 and v1.13.12-2 k8s.io#974
• k/k bump: Update Golang to v1.14.4 kubernetes#88638
• Cherry picks:
  • 1.18:
  • 1.17:
  • 1.16:
• kubekins/krte variants bump: releng: Update variants (kubekins, krte) to use go1.14.4 test-infra#18047
• k/release/k8s-cloud-builder bump: k8s-cloud-builder: Build cross1.14 variant on kube-cross:v1.14.4-2 #1374
• publishing-bot bump:

/assign
/priority important-soon
cc: @kubernetes/release-engineering @markyjackson-taulia