Re-enable build caching for local s2i builds

[matejvasek]

Changes

• Re-enable build caching for local s2i builds

[lkingland]

/lgtm

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lkingland, matejvasek

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[codecov]

Codecov Report

Attention: Patch coverage is 62.50000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 62.43%. Comparing base (3e75e25) to head (d7d45ba).
Report is 15 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/builders/s2i/builder.go	62.50%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2772      +/-   ##
==========================================
+ Coverage   61.59%   62.43%   +0.84%     
==========================================
  Files         131      131              
  Lines       15793    15800       +7     
==========================================
+ Hits         9727     9865     +138     
+ Misses       5151     4992     -159     
- Partials      915      943      +28     

Flag	Coverage Δ
e2e-test	35.32% <0.00%> (-0.02%)	⬇️
e2e-test-oncluster	33.68% <0.00%> (+1.33%)	⬆️
e2e-test-oncluster-runtime	28.08% <0.00%> (?)
e2e-test-runtime-go	25.74% <62.50%> (?)
e2e-test-runtime-node	25.09% <62.50%> (?)
e2e-test-runtime-rust	24.65% <0.00%> (?)
e2e-test-runtime-springboot	24.69% <0.00%> (?)
e2e-test-runtime-typescript	25.18% <62.50%> (?)
integration-tests	48.62% <62.50%> (+1.81%)	⬆️
unit-tests	48.67% <62.50%> (?)
unit-tests-macos-latest	?
unit-tests-ubuntu-latest	?
unit-tests-windows-latest	?

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