[release-1.10] Fix appending SHA256 hash to image reference in ImageWithDigest

[knative-prow-robot]

This is an automated cherry-pick of #1784

s
Fixes a bug when appending SHA256 hash to image reference

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.24 🎉

Comparison is base (61179d8) 62.89% compared to head (7159e7e) 63.14%.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-1.10    #1846      +/-   ##
================================================
+ Coverage         62.89%   63.14%   +0.24%     
================================================
  Files                93       93              
  Lines             11972    11976       +4     
================================================
+ Hits               7530     7562      +32     
+ Misses             3754     3730      -24     
+ Partials            688      684       -4     

Flag	Coverage Δ
e2e-test	38.88% <25.00%> (-0.01%)	⬇️
e2e-test-oncluster	34.66% <25.00%> (+0.02%)	⬆️
e2e-test-oncluster-runtime	29.58% <0.00%> (?)
e2e-test-runtime-go	28.29% <25.00%> (?)
e2e-test-runtime-node	29.43% <25.00%> (?)
e2e-test-runtime-python	29.43% <25.00%> (?)
e2e-test-runtime-quarkus	29.56% <25.00%> (?)
e2e-test-runtime-springboot	28.35% <25.00%> (?)
e2e-test-runtime-typescript	29.56% <25.00%> (?)
integration-tests	50.05% <25.00%> (-0.05%)	⬇️
unit-tests-macos-latest	48.93% <100.00%> (+0.04%)	⬆️
unit-tests-ubuntu-latest	49.85% <100.00%> (+0.04%)	⬆️
unit-tests-windows-latest	48.99% <100.00%> (+0.04%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/functions/function.go	78.92% <100.00%> (+0.99%)	⬆️

... and 3 files with indirect coverage changes

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[lance]

/lgtm

[lance]

/approve

[knative-prow]

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