fix(diff): refuse to diff on kubectl 1.18 (#254)
fix(diff): refuse to diff on kubectl 1.18 (#254)

Kubectl 1.18 includes an unfixed issue that causes diff to apply as well – which
is a very bad thing. To avoid this, we now check and abort on that specific
version, prompting the user to downgrade as no fix is yet available.

https://github.com/kubernetes/kubernetes/issues/89762
grafana/tanka