update a couple of versions across cookbooks

At least that got me going, I was stuck with non-provisioned machine otherwise:

* `Type::Tiny` -- @tobyink removed pre-1.000000 versions from CPAN, used the most recent one;
* I got some weird error trying to install `sass`. Didn't dig deep, changing to gem installation worked fine;
* `apt` wasn't able to find `1.6.0-1~precise`, changed to which was available

Cheers!