deps: use `runtime_dependencies` more readily.
deps: use `runtime_dependencies` more readily.

If all the passed packages are currently installed then use
`runtime_dependencies` to get dependency data more quickly and
accurately.

As discussed in https://github.com/Homebrew/brew/issues/6769.

nandub/brew,EricFromCanada/brew,EricFromCanada/brew,nandub/brew,vitorgalvao/brew,mahori/brew,claui/brew,Homebrew/brew,mahori/brew,sjackman/homebrew,konqui/brew,claui/brew,Homebrew/brew,vitorgalvao/brew,mahori/brew,konqui/brew,Homebrew/brew,JCount/brew,reitermarkus/brew,reitermarkus/brew,sjackman/homebrew,nandub/brew,EricFromCanada/brew,claui/brew,mahori/brew,JCount/brew,reitermarkus/brew,JCount/brew,claui/brew,nandub/brew,konqui/brew,MikeMcQuaid/brew,Homebrew/brew,MikeMcQuaid/brew,MikeMcQuaid/brew,vitorgalvao/brew,sjackman/homebrew,vitorgalvao/brew,JCount/brew,reitermarkus/brew,sjackman/homebrew,EricFromCanada/brew,konqui/brew,MikeMcQuaid/brew