Use apt-get update before installing packages in server CI (#1244)

        components: ${{ env.rust_toolchain_components }}

        default: true

    - name: Install benchmarks dependencies

      run: sudo apt-get install -y ${{ env.apt_dependencies }}

      run: sudo apt-get update && sudo apt-get install -y ${{ env.apt_dependencies }}

    # Ubuntu 20.04 doesn't have wrk packaged, hence we need to build it 🤦

    # This will go away as soon as GitHub supports Ubuntu 21.10.

    - name: Install wrk