Upgrade to Node v18

[gnprice]

The successor to #4263.

Node 18 was released 2022-04-19. It will shortly (2022-10-25) be the "active LTS", and will be supported until 2025-04-30. See schedule: https://github.com/nodejs/Release#readme

[gnprice]

I'm now running Node 18 on my desktop. I've run into one issue so far -- react-native start fails with the following error:

info Reloading app...
Failed to construct transformer:  Error: error:0308010C:digital envelope routines::unsupported
    at new Hash (node:internal/crypto/hash:71:19)
    at Object.createHash (node:crypto:133:10)
    at stableHash (/home/greg/z/mobile/node_modules/metro-cache/src/stableHash.js:19:8)
    at Object.getCacheKey (/home/greg/z/mobile/node_modules/metro-transform-worker/src/index.js:593:7)
    at getTransformCacheKey (/home/greg/z/mobile/node_modules/metro/src/DeltaBundler/getTransformCacheKey.js:24:19)
    at new Transformer (/home/greg/z/mobile/node_modules/metro/src/DeltaBundler/Transformer.js:48:9)
    at /home/greg/z/mobile/node_modules/metro/src/Bundler.js:22:29 {
  opensslErrorStack: [ 'error:03000086:digital envelope routines::initialization error' ],
  library: 'digital envelope routines',
  reason: 'unsupported',
  code: 'ERR_OSSL_EVP_UNSUPPORTED'
}

See this SO question, with several answers: https://stackoverflow.com/questions/69394632/webpack-build-failing-with-err-ossl-evp-unsupported and in particular this answer quoting the Node release notes.

In short it seems that newer Node uses a newer OpenSSL, which has dropped some ancient crypto primitives, but some tools -- Webpack in the case of that SO question, Metro in our case -- are still trying to use them.

• The immediate workaround, which I'm using for now, is to say NODE_OPTIONS=--openssl-legacy-provider react-native start. This should leave things no worse off than with Node v16.
• A better fix would be one that switches off of those ancient, now-unsupported crypto algorithms. Upgrading Webpack apparently does that when the issue is in Webpack. Perhaps upgrading Metro will do it for us?