message: docs(build): add zip and pkg-config to list of build deps
  These were also missing from my WSL 2 Ubuntu 20.04 installation
  and had to install them manually before I could build the project
  successfully.
diff: @@ -133,7 +133,8 @@ Use this code to install environment dependencies on Debian-based Linux distro.
  apt-get update; \
  apt-get -y --no-install-recommends install \
  build-essential ninja-build \
  - git ca-certificates tar curl unzip cmake
  + git ca-certificates tar curl unzip cmake \
  + pkg-config zip
  .. Important:: If you would like to use `Burrow integration <../integrations/burrow.html>`_ you will also need GO. Install it following the instructions on `the official website <https://golang.org/doc/install>`_ and then use the following command:
  