Update rand to 0.9.0

[thomas-tribus]

I wanted to create a PR to switch from rand 0.8.5 to 0.9.0. It is quite an involved upgrade and my knowledge of fake-rs is far from complete. I created a PR to get some feedback. I have one issue (and I'm not sure how many other issues this is hiding) with the proc-macro which won't compile anymore. I don't have much experience with proc macros, so I'm hoping the error below triggers something in somebody here.

For the actual upgrade notes see:

See: https://rust-random.github.io/book/update-0.9.html

The upgrade has quite a few breaking changes. Most notable are:

• Drop support for usize and isize from Uniform
• Uniform::sample returns result (used to panic)
• Deprecate gen like function names (replace with random)

The actual error I'm getting is this. To be honest, I'm not even sure where to begin to fix it.

error[E0782]: expected a type, found a trait
  --> fake/tests/derive_macros.rs:22:22
   |
22 |             #[derive(Dummy, Debug, Eq, PartialEq)]
   |                      ^^^^^ in this derive macro expansion
   |
  ::: .../fake-rs/dummy_derive/src/lib.rs:59:1   |

[cksac]

you can look at usage of rand in dummy_derive, and update the usage of rand accordingly.
https://github.com/cksac/fake-rs/blob/master/dummy_derive/src/lib.rs#L220 this part is used when generate dummy impl for enum.

[thomas-tribus]

update the usage of rand accordingly.

That was indeed the issue, after updating the usage of rand the issue was fixed.

Another thing; I encountered failing tests after my changes. It seems the new rand version is giving different numbers vs the expected numbers. After changing the tests to accept the new values they pass consistently on my machine. But while I'm writing this I see I still have builds. But that is for tomorrow.

[thomas-tribus]

@cksac All builds pass now, please let me know what you think.

[cksac]

LGTM