chore(deps): bump codecov/codecov-action from 3 to 4 (#5567)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ccpp.yml

@@ -46,7 +46,7 @@ jobs:
              tests/ref_imgs/**/*_err.png
              test_screenshot_error.h
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       if: github.event_name == 'push' && github.repository == 'lvgl/lvgl'
       with:
         fail_ci_if_error: true