perf(local): don't read the entire zip into memory

[G-Rath]

I'm a little suspect of the results I've produced, but it seems like this reduces memory usage by a decent amount e.g. with the Ubuntu SBOM used for #2217 we go from 1gb to 200mb total.

Ultimately, I think the theory is sound and that are not really any downsides so we might as well change this.

Note that this does not have any impact on scanning speed, just memory usage.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 71.42857% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 67.79%. Comparing base (cc37ac7) to head (23f4f17).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/clients/clientimpl/localmatcher/zip.go	71.42%	5 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2445      +/-   ##
==========================================
- Coverage   67.83%   67.79%   -0.04%     
==========================================
  Files         172      172              
  Lines       13290    13301      +11     
==========================================
+ Hits         9015     9018       +3     
- Misses       3569     3573       +4     
- Partials      706      710       +4     

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