Support 1.11+ as a kubectl version

[dgageot]

Fixes #1842

[codecov-io]

Codecov Report

Merging #1843 into master will increase coverage by 0.38%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master   #1843      +/-   ##
=========================================
+ Coverage   47.91%   48.3%   +0.38%     
=========================================
  Files         144     144              
  Lines        6499    6501       +2     
=========================================
+ Hits         3114    3140      +26     
+ Misses       3101    3077      -24     
  Partials      284     284

Impacted Files	Coverage Δ
pkg/skaffold/deploy/kubectl/version.go	86.66% <100%> (+86.66%)	⬆️

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[balopat]

LGTM