Bump actions/download-artifact from 3 to 4

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](https://github.com/actions/download-artifact/compare/v3...v4)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/github.yml

@@ -420,7 +420,7 @@ jobs:
         cmake --build --preset ${{matrix.preset}}
 
     - name: Download libs x64
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: Android JNI android-64
         path: ${{ github.workspace }}/android/vcmi-app/src/main/jniLibs/