ogma-cli: Add missing dependency to installation instructions in README. Refs #314.

[ivanperez-keera]

Add the missing dependency on libz-dev to the installation instructions for Linux in the README, as prescribed in the solution proposed for #314.

[ivanperez-keera]

Change Manager: Verified that:

• Solution is implemented:
  • The code proposed compiles and passes all tests. Details:
    • Build logs:
      • https://github.com/nasa/ogma/actions/runs/19603811991/job/56139240465
      • https://github.com/nasa/ogma/actions/runs/19603811990/job/56139240439
      • https://github.com/nasa/ogma/actions/runs/19603811992/job/56139240444
    • Build log archives:
      • logs_50563209759.zip
      • logs_50563209760.zip
      • logs_50563209762.zip
  • The solution proposed produces the expected result. Details:
    The following Dockerfile installs Ogma following the steps in the README, after which it prints the message "Success":

    FROM ubuntu:22.04
    
    ENV DEBIAN_FRONTEND=noninteractive
    
    RUN apt-get update
    SHELL ["/bin/bash", "-c"]
    
    RUN apt-get install --yes ghc cabal-install pkg-config g++
    
    WORKDIR /root/
    
    ENV PATH=/root/.cabal-sandbox/bin:$PATH
    
    RUN cabal update
    RUN cabal v1-sandbox init
    RUN apt-get install --yes git
    RUN apt-get install --yes libz-dev libbz2-dev libexpat1-dev
    RUN cabal v1-install alex happy
    RUN cabal v1-install BNFC
    
    SHELL ["/bin/bash", "-c"]
    CMD git clone $REPO \
      && pushd $NAME \
      && git checkout $COMMIT \
      && popd \
      && cabal v1-install --force-reinstalls --constraint="aeson>=2.0.3.0" $NAME/ogma-**/ \
      && echo "Success"

    Command (substitute variables based on new path after merge):

    $ docker run -e REPO=https://github.com/ivanperez-keera/ogma -e NAME=ogma -e COMMIT=200e9ad65bbc3070337b873f9525eb3e86a161a3 ogma-verify-314
    

• Implementation is documented. Details:
  Change is to the documentation.
• Change history is clear.
• Commit messages are clear.
• Changelogs are updated.
• Examples are updated. Details:
  No updates needed; change is to the README.
• Author is internal or has provided signed CLA.
• Required version bumps are evaluated. Details:
  Bump not required; change does not alter public interface.