[CORL-3020]: Update to use pnpm instead of npm

[kabeaty]

What does this PR do?

These changes update to use pnpm instead of npm as Coral's package manager.

To achieve this, it was necessary to:

• Update scripts to use pnpm
• Install some dependencies that weren't directly installed before
• Update transformIgnorePatterns in jest config to include .pnpm symlink path (See https://jestjs.io/docs/configuration#transformignorepatterns-arraystring and its Tip section)

In this PR, we also override protobufjs in our server package.json to address a security update needed there.

These changes will impact:

• [ ] commenters
• [ ] moderators
• [ ] admins
• [x] developers

What changes to the GraphQL/Database Schema does this PR introduce?

none

Does this PR introduce any new environment variables or feature flags?

no

If any indexes were added, were they added to INDEXES.md?

n/a

How do I test this PR?

First, you'll need to get set up with pnpm. You can run npm install -g pnpm@8.14.3 Then you'll want to clear your node modules. Run sh scripts/clear-node_modules.sh Then you can run sh scripts/pnpm-ci.sh to install from the new pnpm-lock.yaml. (This is equivalent to package-lock.json) Then you can do all the usual things. pnpm run watch inside client and server to run Coral (Might need to run sh scripts/build.sh first if you see linting errors) pnpm run lint inside client and server to check linting (or sh scripts/lint.sh to run linting everywhere) pnpm run test inside client and server to check tests

Were any tests migrated to React Testing Library?

How do we deploy this PR?

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