Update node version to 18 to stay up-to-date

[escapedcat]

Is your feature request related to a problem?

We're currently using v14 which is maintenance is running out April next year. See: https://nodejs.org/en/about/releases/

Describe the solution you'd like

• Update node version to latest v18 in i.e.
  • node-version
  • .nvmrc
• Install it
• Test if dev task still work
• Test if build still works

Additional context

Unit-test setup

Looks like some unit-tests fail after an update to 16/18. This helps partly:

• Updating runcitadel #1280
• transformIgnorePatterns: ["node_modules/(?!(dexie))/"],
• Update jest (and related)to v29
• In other cases more mocking helps, i.e.:

  jest.mock("~/common/lib/utils");
  jest.mock("~/common/utils/currencyConvert");
  

Failing npm deps

• https://github.com/getAlby/lightning-browser-extension/pull/1549 Latest wext-manifest-loader needs node v16.15.0 as a minimum
  Update will be paused via depfu for now