Release 3.1.2

Changed

• Replaced Jest with Vitest as the test runner for unit tests. This will help improve test performance and better aligns
  with the Vue 3 + Vite ecosystem.

• Updated FontAwesomeIconProps:

  • flip now accepts the boolean type in addition to 'horizontal' | 'vertical' | 'both'
  • maskId is now correctly typed as string

• Updated DEVELOPMENT.md with revised release instructions