feat: Allow overriding package versions

[nightscape]

Tracking issue

Closes https://github.com/flyteorg/flyte/issues/5597

Why are the changes needed?

See https://github.com/flyteorg/flyte/issues/5597

What changes were proposed in this pull request?

How was this patch tested?

Not yet

Setup process

Screenshots

Check all the applicable boxes

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

Related PRs

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 18.18182% with 9 lines in your changes missing coverage. Please review.

Project coverage is 45.44%. Comparing base (37e4fad) to head (9f05341). Report is 7 commits behind head on master.

Files with missing lines	Patch %	Lines
flytekit/image_spec/image_spec.py	22.22%	7 Missing :warning:
flytekit/image_spec/default_builder.py	0.00%	2 Missing :warning:

:exclamation: There is a different number of reports uploaded between BASE (37e4fad) and HEAD (9f05341). Click for more details.

HEAD has 16 uploads less than BASE

Flag	BASE (37e4fad)	HEAD (9f05341)
	17	1

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #2616       +/-   ##
===========================================
- Coverage   80.57%   45.44%   -35.14%     
===========================================
  Files         260      196       -64     
  Lines       23778    20310     -3468     
  Branches     2618     2619        +1     
===========================================
- Hits        19160     9230     -9930     
- Misses       3922    10632     +6710     
+ Partials      696      448      -248     

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[nightscape]

Could someone have a look at this, maybe @eapolinario ?

[eapolinario]

I left a comment in the original issue. Let's follow up there before deciding if this PR is still applicable.