Bump seanmiddleditch/gha-setup-ninja from 3 to 4

Bumps [seanmiddleditch/gha-setup-ninja](https://github.com/seanmiddleditch/gha-setup-ninja) from 3 to 4.
- [Release notes](https://github.com/seanmiddleditch/gha-setup-ninja/releases)
- [Commits](https://github.com/seanmiddleditch/gha-setup-ninja/compare/v3...v4)

---
updated-dependencies:
- dependency-name: seanmiddleditch/gha-setup-ninja
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/qt-ci.yml

@@ -153,7 +153,7 @@ jobs:
           tools: ${{ matrix.qt_tools }}
 
       - name: Setup ninja
-        uses: seanmiddleditch/gha-setup-ninja@v3
+        uses: seanmiddleditch/gha-setup-ninja@v4
 
       - name: Setup Xcode
         if: runner.os == 'macOS'