ci: fixing the coverage report

Signed-off-by: Vincenzo Palazzo <[email protected]>

.github/workflows/build.yml

@@ -85,6 +85,7 @@ jobs:
           curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile=minimal
       - name: Run tests with coverage generation
         run: |
+          apt-get install build-essential pkg-config libssl-dev -y
           cargo install cargo-llvm-cov
           export RUSTFLAGS="-Clink-dead-code -Coverflow-checks=off"
           cargo llvm-cov --features rest-client,rpc-client,tokio,futures,serde --codecov --hide-instantiations --output-path=target/codecov.json