pnpm introduced catalogs feature in 9.5.0.

Bare minimum support

• Ignore catalog: protocol (we are already protocol agnostic)

Great to support

• Should align-deps verify catalogs defined in pnpm-workspace.yaml?

  # Default catalogs
  catalog:
    chalk: ^4.1.2
  
  # Named catalogs
  catalogs:
    react16:
      react: ^16.7.0
      react-dom: ^16.7.0
    react17:
      react: ^17.10.0
      react-dom: ^17.10.0

• Should align-deps output catalogs?