fix: add update verb to ClusterRole permissions for scaleDown feature. Fixes #3672

[EnriqueTejeda]

Fixes: #3672

Add the update verb in the ClusterRole permissions to allow argo-rollouts to update deployments. This fixes the issue with the scaleDown feature not working due to missing permissions. (#3672)

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this is a chore.
• The title of the PR is (a) conventional with a list of types and scopes found here, (b) states what changed, and (c) suffixes the related issues number. E.g. "fix(controller): Updates such and such. Fixes #1234".
• I've signed my commits with DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My builds are green. Try syncing with master if they are not.
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[github-actions]

Go Published Test Results

2 163 tests   2 163 ✅  2m 54s ⏱️
  119 suites      0 💤
    1 files        0 ❌

Results for commit d89081b.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.27%. Comparing base (4f1edbe) to head (d89081b).
Report is 81 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3675   +/-   ##
=======================================
  Coverage   80.27%   80.27%           
=======================================
  Files         156      156           
  Lines       17964    17964           
=======================================
  Hits        14420    14420           
  Misses       2631     2631           
  Partials      913      913           

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E2E Tests Published Test Results

  4 files    4 suites   3h 24m 3s ⏱️
111 tests 103 ✅  6 💤 2 ❌
446 runs  420 ✅ 24 💤 2 ❌

For more details on these failures, see this check.

Results for commit d89081b.

[DrFaust92]

would it be possible to release 1.7.2 with this commit? its blocking usage of a feature released in 1.7.0 that didnt have relevant permissions

for ref: argoproj/argo-helm#2795