Release ink! 3.0.0-rc5

[cmichi]

I would have liked to wait with the release until we have the state rent stuff removed completely as well, but a couple users have now run into #902 and it makes sense to do a release now. Due to semver they will automatically receive the fix.

[forgetso]

For anyone running into the following issue with this release:

error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
  --> /home/chris/.cargo/registry/src/github.com-1ecc6299db9ec823/ink_env-3.0.0-rc5/src/lib.rs:56:5
   |
56 |     core::arch::wasm32::unreachable();
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function

Try cargo install --force cargo-contract && rustup update to make sure everything is up to date.

[cmichi]

Thanks @forgetso! Just created a follow-up.