[release-1.0] bump knative.dev/hack

[dprotaso]

This bumps knative.dev/hack which fixes upgrade tests here: #12270

[knative-prow-robot]

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This pull-request has been approved by: dprotaso, odacremolbap

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[codecov]

Codecov Report

Merging #12271 (4ce95bf) into release-1.0 (f1e419a) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           release-1.0   #12271      +/-   ##
===============================================
- Coverage        87.44%   87.42%   -0.03%     
===============================================
  Files              196      196              
  Lines             9614     9612       -2     
===============================================
- Hits              8407     8403       -4     
- Misses             930      931       +1     
- Partials           277      278       +1     

Impacted Files	Coverage Δ
pkg/reconciler/configuration/configuration.go	84.61% <0.00%> (-1.54%)	⬇️
pkg/autoscaler/statforwarder/leases.go	75.53% <0.00%> (-1.44%)	⬇️
pkg/http/response_recorder.go	100.00% <0.00%> (ø)
pkg/reconciler/revision/background.go	93.20% <0.00%> (+1.94%)	⬆️

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[evankanderson]

/lgtm