fix: change ts target for vite-dev-server node 12 compatibility

[jguddas]

https://github.com/microsoft/TypeScript/wiki/Node-Target-Mapping#node-12

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[jguddas]

Is this test flaky, I can't see how this would be affected?

https://github.com/cypress-io/cypress/blame/50d10700262645cc3953e647186e21eb117e4d52/packages/desktop-gui/cypress/integration/settings_spec.js#L821-L823

[mjhenkes]

@jguddas, yes that test is flaky. I have a fix for i'll be putting up for PR in the next couple of days.

[jguddas]

resolved by #18989