Run CI in release branches

[eapolinario]

Why are the changes needed?

We should run CI checks in release branches.

What changes were proposed in this pull request?

How was this patch tested?

Setup process

Screenshots

Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

Related PRs

Docs link

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 36.80%. Comparing base (8890b38) to head (067b76a).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5901      +/-   ##
==========================================
- Coverage   36.81%   36.80%   -0.01%     
==========================================
  Files        1309     1309              
  Lines      130899   130899              
==========================================
- Hits        48185    48176       -9     
- Misses      78532    78540       +8     
- Partials     4182     4183       +1     

Flag	Coverage Δ
unittests-datacatalog	51.58% <ø> (ø)
unittests-flyteadmin	54.01% <ø> (-0.03%)	⬇️
unittests-flytecopilot	11.73% <ø> (ø)
unittests-flytectl	62.40% <ø> (ø)
unittests-flyteidl	6.92% <ø> (ø)
unittests-flyteplugins	53.57% <ø> (ø)
unittests-flytepropeller	43.00% <ø> (ø)
unittests-flytestdlib	55.36% <ø> (-0.06%)	⬇️

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