Remove deprecated field from Deployment

[sagnik3788]

What this PR does:
as title

Why we need it:
version field was already marked as deprecated and is no longer in use

Which issue(s) this PR fixes:

Fixes #5061

[t-kikuc]

@sagnik3788
Hi, please execute make gen/code to fix https://github.com/pipe-cd/pipecd/actions/runs/14951420716/job/42007019300?pr=5809

[sagnik3788]

I will fix these

[t-kikuc]

@sagnik3788 Please fix lint and test, and use make gen/code

[Warashi]

Thank you for your contribution.

I commented on nits.

[t-kikuc]

@sagnik3788 And please fix the conflict 🙇 It's due to other PRs.

[t-kikuc]

Thank you!

[Warashi]

Sorry, we updated the CI and branch protection rules.
I updated the branch of this PR by pushing the Update branch button, which is the GitHub feature.
Please let me know if you see any unexpected behavior.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 36.28%. Comparing base (44a0c00) to head (7bf88c4).
Report is 46 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5809      +/-   ##
==========================================
+ Coverage   27.85%   36.28%   +8.43%     
==========================================
  Files         519       30     -489     
  Lines       55793     3296   -52497     
==========================================
- Hits        15539     1196   -14343     
+ Misses      39070     2034   -37036     
+ Partials     1184       66    -1118     

Flag	Coverage Δ
.	?
.-pkg-app-pipedv1-plugin-example	0.00% <ø> (ø)
.-pkg-app-pipedv1-plugin-kubernetes	?
.-pkg-app-pipedv1-plugin-kubernetes_multicluster	?
.-pkg-app-pipedv1-plugin-wait	35.51% <ø> (ø)
.-pkg-plugin-sdk	49.25% <ø> (ø)
.-tool-actions-gh-release	19.58% <ø> (ø)
.-tool-actions-plan-preview	23.22% <ø> (ø)
.-tool-codegen-protoc-gen-auth	0.00% <ø> (ø)

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[khanhtc1202]

Thank you 🚀