chore: update image dependencies

[briandealwis]

Description

• Update the gcr.io/k8s-skaffold dependencies:
  • Kubectl to 1.20.10, to match change to default version made with Google Cloud SDK 358.0.0
  • Helm to 3.7.1
  • Kustomize to 4.4.0
  • Kpt to 0.39.3: this is a necessary downgrade as Skaffold 1.X doesn't work with Kpt 1.0.0-(alpha|beta) (fix: sanity check kpt deployer versions #6711)
  • Kompose to 1.24.0
  • k3d to v5.0.1
  • Google Cloud SDK to 360.0.0
  • Bazel to 4.2.1
• To improve our security posture, this PR also causes the image build to check the downloaded binaries against their published digests.
• Use ARCH build-arg to help allowing building multi-arch images

User facing changes (remove if N/A)

Follow-up Work (remove if N/A)

[codecov]

Codecov Report

Merging #6736 (3857067) into main (290280e) will decrease coverage by 0.81%.
The diff coverage is 57.14%.

@@            Coverage Diff             @@
##             main    #6736      +/-   ##
==========================================
- Coverage   70.48%   69.66%   -0.82%     
==========================================
  Files         515      527      +12     
  Lines       23150    24096     +946     
==========================================
+ Hits        16317    16787     +470     
- Misses       5776     6208     +432     
- Partials     1057     1101      +44     

Impacted Files	Coverage Δ
cmd/skaffold/app/cmd/flags.go	89.00% <0.00%> (-1.82%)	⬇️
cmd/skaffold/skaffold.go	0.00% <ø> (ø)
cmd/skaffold/app/cmd/cmd.go	70.32% <66.66%> (-0.73%)	⬇️
cmd/skaffold/app/cmd/debug.go	100.00% <100.00%> (ø)
cmd/skaffold/app/cmd/runner.go	64.17% <100.00%> (ø)
pkg/skaffold/initializer/build/builders.go	42.85% <0.00%> (-17.15%)	⬇️
pkg/skaffold/build/cluster/logs.go	0.00% <0.00%> (-16.67%)	⬇️
pkg/skaffold/event/v2/status_check.go	85.45% <0.00%> (-14.55%)	⬇️
pkg/skaffold/kubernetes/watcher.go	67.10% <0.00%> (-14.53%)	⬇️
.../skaffold/kubernetes/status/resource/deployment.go	72.41% <0.00%> (-13.39%)	⬇️
... and 93 more

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