Update wayland-cursor requirement from 0.29 to 0.31

Updates the requirements on [wayland-cursor](https://github.com/smithay/wayland-rs) to permit the latest version.
- [Release notes](https://github.com/smithay/wayland-rs/releases)
- [Changelog](https://github.com/Smithay/wayland-rs/blob/master/historical_changelog.md)
- [Commits](https://github.com/smithay/wayland-rs/commits)

---
updated-dependencies:
- dependency-name: wayland-cursor
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.toml

@@ -81,7 +81,7 @@ wayland-protocols = { version = "0.29", features = [
   "client",
   "unstable_protocols",
 ], optional = true }
-wayland-cursor = { version = "0.29", optional = true }
+wayland-cursor = { version = "0.31", optional = true }
 tempfile = { version = "3.3", optional = true }
 x11-dl = { version = "2.19.1", optional = true }
 libc = { version = "0.2.107", optional = true }