refactor[venom]: update more passes to use InstUpdater

[charles-cooper]

What I did

update more passes to use InstUpdater.

• found a latent bug in MakeSSA (it was not invalidating the dfg, which was only tripped after updating LowerDLoadPass to not invalidate the dfg).
• fixed a latent bug in InstUpdater.update() - it did not delete the op from dfg_outputs after update

How I did it

How to verify it

Commit message

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Description for the changelog

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[codecov]

Codecov Report

Attention: Patch coverage is 88.88889% with 6 lines in your changes missing coverage. Please review.

Project coverage is 92.16%. Comparing base (41108f9) to head (3eacd7e).

Files with missing lines	Patch %	Lines
vyper/venom/passes/machinery/inst_updater.py	79.16%	3 Missing and 2 partials ⚠️
vyper/venom/passes/mem2var.py	90.90%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4516   +/-   ##
=======================================
  Coverage   92.15%   92.16%           
=======================================
  Files         123      123           
  Lines       17469    17478    +9     
  Branches     2957     2963    +6     
=======================================
+ Hits        16099    16108    +9     
+ Misses        958      957    -1     
- Partials      412      413    +1     

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