Upgrade to prettier v3

[wjhsf]

Jest currently does not play well with ESM packages. Prettier v3 is a purely ESM package. We use prettier in our jest tests.

lwc/packages/@lwc/template-compiler/src/__tests__/fixtures.spec.ts

Line 10 in 1733916

import prettier from 'prettier';

If jest adds better ESM support, if we drop jest (#4153), or if we change that test file, then we will be able to upgrade to prettier v3.

Note that we can run NODE_OPTIONS=--experimental-vm-modules yarn test to fix the error when importing prettier, but that causes a different error when jest internals try to import @parse5/tools.

See #4384 and #4140 for prior attempts to do this.