fix(ci): use tarpaulin LLVM engine for C++ FFI compatibility

Author: igorls

.github/workflows/ci.yml

@@ -60,12 +60,14 @@ jobs:
 
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@stable
+        with:
+          components: llvm-tools-preview
 
       - name: Install cargo-tarpaulin
         run: cargo install cargo-tarpaulin
 
       - name: Generate coverage
-        run: cargo tarpaulin --out lcov --output-dir ./coverage
+        run: cargo tarpaulin --engine llvm --out lcov --output-dir ./coverage
 
       - name: Upload to Coveralls
         uses: coverallsapp/github-action@v2