update codecov ci

Author: GiggleLiu

.github/workflows/ci.yml

@@ -57,7 +57,7 @@ jobs:
       - name: Generate coverage
         run: cargo llvm-cov --features ilp-highs --workspace --lcov --output-path lcov.info
       - name: Upload to codecov.io
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           files: lcov.info
           fail_ci_if_error: false  # Don't fail CI if upload fails