build(deps): bump fsfe/reuse-action from 4 to 5

Bumps [fsfe/reuse-action](https://github.com/fsfe/reuse-action) from 4 to 5.
- [Release notes](https://github.com/fsfe/reuse-action/releases)
- [Commits](fsfe/reuse-action@v4...v5)

---
updated-dependencies:
- dependency-name: fsfe/reuse-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/github-cxx-qt-tests.yml

@@ -36,7 +36,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: REUSE Compliance Check
-        uses: fsfe/reuse-action@v4
+        uses: fsfe/reuse-action@v5
 
   rust_format_check:
     runs-on: ubuntu-24.04