Fix multiarch image build

[matejvasek]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.35%. Comparing base (60d9126) to head (d60b5f0).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2679      +/-   ##
==========================================
+ Coverage   64.07%   65.35%   +1.27%     
==========================================
  Files         131      131              
  Lines       15601    15601              
==========================================
+ Hits         9997    10196     +199     
+ Misses       4653     4417     -236     
- Partials      951      988      +37     

Flag	Coverage Δ
e2e-test	35.84% <ø> (ø)
e2e-test-oncluster	34.28% <ø> (+1.49%)	⬆️
e2e-test-oncluster-runtime	28.64% <ø> (?)
e2e-test-runtime-go	26.41% <ø> (?)
e2e-test-runtime-node	25.83% <ø> (?)
e2e-test-runtime-python	25.83% <ø> (?)
e2e-test-runtime-quarkus	25.98% <ø> (?)
e2e-test-runtime-rust	24.93% <ø> (?)
e2e-test-runtime-springboot	24.97% <ø> (?)
e2e-test-runtime-typescript	25.94% <ø> (?)
integration-tests	51.95% <ø> (+2.22%)	⬆️
unit-tests	50.96% <ø> (?)
unit-tests-macos-latest	?
unit-tests-ubuntu-latest	?
unit-tests-windows-latest	?

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[matejvasek]

PTAL @lkingland

[matejvasek]

releated: moby/buildkit#5670

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

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

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