Cleanup frontend dependencies and update Kubernetes dependencies

[maciaszczykm]

Closes #6634.

[codecov]

Codecov Report

Merging #6688 (7cf55e5) into master (4ab436f) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #6688      +/-   ##
==========================================
- Coverage   41.89%   41.86%   -0.04%     
==========================================
  Files          44       44              
  Lines        1234     1235       +1     
  Branches      178      178              
==========================================
  Hits          517      517              
- Misses        678      679       +1     
  Partials       39       39              

[shu-mutou]

I created #6690 as a continuation of yesterday.
I ran the checks locally for each commit, so it probably works.
Now, it's the end of the day, so I'm leaving without seeing the CI results.
I'm preciated you would concentrate to remove unused packages. See you next week!

[maciaszczykm]

@shu-mutou @floreks PTAL

[maciaszczykm]

I've also updated k8s dependencies.

[floreks]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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