build(deps): bump qemu-exit from 3.0.2 to 4.0.0

Bumps [qemu-exit](https://github.com/rust-embedded/qemu-exit) from 3.0.2 to 4.0.0.
- [Release notes](https://github.com/rust-embedded/qemu-exit/releases)
- [Changelog](https://github.com/rust-embedded/qemu-exit/blob/main/CHANGELOG.md)
- [Commits](rust-embedded/qemu-exit@v3.0.2...v4.0.0)

---
updated-dependencies:
- dependency-name: qemu-exit
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Cargo.lock

@@ -34,7 +34,7 @@ multiboot = { version = "0.8", default-features = false }
 elf_rs = { version = "0.3", default-features = false }
 good_memory_allocator = { version = "0.1", default-features = false }
 integration-test-util = { path = "./integration-test/bins/util" }
-qemu-exit = { version = "3.0", default-features = false }
+qemu-exit = { version = "4.0", default-features = false }
 
 # Intra-workspace dependencies of upstream crates
 multiboot2 = { version = "0.24.0", default-features = false }