Update upstream to 0.24.2 with two-factor support

`gh` added support for two-factor auth in 0.24.2, see jingweno/gh#85 and https://github.com/jingweno/gh/commit/42e4d021cf5c5854920d386480bbbd9466a2c823

While you can get this update by running `brew upgrade [...]` it's nice to have it by default!
Merge pull request #1 from dgoodlad/patch-1

Update upstream to 0.24.2 with two-factor support