Update to pnpm 12.3.4, update vulnerable dependencies

[pmachapman]

This PR updates pnpm to 12.3.4.

To update your local copy, run:

npm install -g pnpm@12.3.4

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This change is 

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.95%. Comparing base (927235a) to head (b9c0319).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4106   +/-   ##
=======================================
  Coverage   80.95%   80.95%           
=======================================
  Files         664      664           
  Lines       42158    42158           
  Branches     6946     6946           
=======================================
  Hits        34129    34129           
+ Misses       6879     6864   -15     
- Partials     1150     1165   +15     

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