CI fails on window with rustc 1.81

**Describe the bug**
github CI runs fail on compiling cargo-wix on windows with rust 1.81

**To Reproduce**
Steps to reproduce the behavior:
1. Go to [github Actions for workflow CI](https://github.com/gitui-org/gitui/actions/workflows/ci.yml)
2. Click on a failed run. First one is [run 9128](https://github.com/gitui-org/gitui/actions/runs/14962549113) (after 2025-05-11)
3. Open the failed windows job.
4. Scroll down to the error in step "Build MSI (windows)".

**Expected behavior**
No error in run.

**Context (please complete the following information):**
- OS github action, windows-latest
- GitUI Version gitui-org/gitui/head
- Rust version: `1.81`

**Observations**
error: failed to compile cargo-wix
rustc 1.81.0 is not supported by the following package:
backtrace@0.3.75 requires rustc 1.82.0