chore: update CLI deps (cobra, viper, etc)

[lkingland]

• 🧹 updates viper, cobra etc

Includes bugfixes to parsing environment variables vs flags into string arrays. Used in the forthcoming Global Config: Functipn Context feature.

Related: #901

[codecov]

Codecov Report

Base: 47.59% // Head: 49.45% // Increases project coverage by +1.85% 🎉

Coverage data is based on head (885f98d) compared to base (a74e825).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1326      +/-   ##
==========================================
+ Coverage   47.59%   49.45%   +1.85%     
==========================================
  Files          74       77       +3     
  Lines       10415    10541     +126     
==========================================
+ Hits         4957     5213     +256     
+ Misses       5036     4886     -150     
- Partials      422      442      +20     

Flag	Coverage Δ
integration-tests	43.96% <ø> (?)
unit-tests	?
unit-tests-macos-latest	46.09% <ø> (?)
unit-tests-ubuntu-latest	47.59% <ø> (?)
unit-tests-windows-latest	46.14% <ø> (?)

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

Impacted Files	Coverage Δ
docker/docker_client_nonlinux.go	0.00% <0.00%> (ø)
openshift/metadata.go	0.00% <0.00%> (ø)
openshift/openshift.go	5.76% <0.00%> (ø)
client.go	65.18% <0.00%> (+0.60%)	⬆️
docker/creds/credentials.go	73.06% <0.00%> (+1.34%)	⬆️
k8s/secrets.go	19.58% <0.00%> (+6.18%)	⬆️
k8s/configmaps.go	50.00% <0.00%> (+15.78%)	⬆️
k8s/client.go	88.46% <0.00%> (+23.07%)	⬆️
docker/docker_client.go	83.19% <0.00%> (+23.52%)	⬆️
k8s/dialer.go	74.06% <0.00%> (+74.06%)	⬆️

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[zroubalik]

/lgtm

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

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

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