v0.19.0-rc5

chore: update crane version (#1330)

see https://github.com/ipetkov/crane/pull/517 for why we're seeing this
error now:

```
trace: warning: `overrideScope` (from `lib.makeScope`) is deprecated. Do `overrideScope' (self: super: { … })` instead of `overrideScope (super: self: { … })`. All other overrides have the parameters in that order, including other definitions of `overrideScope`. This was the only definition violating the pattern.
```