[CLOUD-652] Set default version to 3.4.0

[maismail]

Make sure there is no duplicate PR for this issue

• Please check if the PR meets the following requirements

  • Adds tests for the submitted changes (for bug fixes & features)
  • Passes the tests including acceptance test
  • An issue has been opened for this PR
  • Updates the change log
  • All commits have been squashed down to a single commit

• Close the associated issue

  Closes https://hopsworks.atlassian.net/browse/CLOUD-652

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (8c570f1) 91.39% compared to head (d05c475) 91.39%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #280   +/-   ##
=======================================
  Coverage   91.39%   91.39%           
=======================================
  Files          23       23           
  Lines        3511     3511           
=======================================
  Hits         3209     3209           
  Misses        223      223           
  Partials       79       79           

Files Changed	Coverage Δ
hopsworksai/resource_cluster.go	89.00% <100.00%> (ø)

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