Linux and Windows deployment scripts fail to build UI

## Describe the bug
If you run a deployment script on a clean machine, the `npm run dist` command will fail with errors and the UI will not be built.

## To Reproduce
Steps to reproduce the behavior:
Run the deployment script on a clean machine.

## Expected behavior
Infection Monkey is successfully deployed.

## Root cause
Both deployment scripts use `npm update` to install dependencies. At the present moment, this results in errors when the UI is built. We should consider using `npm ci` in the deployment scripts so that known working versions of our dependencies are always deployed. We should also periodically update our dependencies to stay ahead of issues like this.