Install Boost in Ubuntu and macOS CI workflows

Add libboost-dev (Ubuntu) and boost (macOS) to the CI dependency
installation steps so RegulatoryNetwork builds correctly in CI.

Author: sportokalidis

.github/workflows/macos-ci.yml

@@ -25,7 +25,7 @@ jobs:
         # GHA macOS: unpin CMake to fix Homebrew conflict (actions/runner-images#12912)
         brew uninstall --force cmake || true
         brew untap local/pinned || true
-        brew install libomp open-mpi python@3.9 wget cmake ninja qt@5 libgit2
+        brew install libomp open-mpi python@3.9 wget cmake ninja qt@5 libgit2 boost
 
     - name: Checkout BioDynaMo
       uses: actions/checkout@v4

.github/workflows/ubuntu-ci.yml

@@ -34,7 +34,8 @@ jobs:
       run: |
         sudo apt-get update
         sudo apt-get install -y libopenmpi-dev gcc-11 g++-11 libomp5 libomp-dev libnuma-dev freeglut3-dev \
-          libreadline-dev libsqlite3-dev tk-dev ${{ env.PYOPENSSL }} ninja-build libblas-dev liblapack-dev libgit2-dev
+          libreadline-dev libsqlite3-dev tk-dev ${{ env.PYOPENSSL }} ninja-build libblas-dev liblapack-dev libgit2-dev \
+          libboost-dev
         curl -L -O https://github.com/Kitware/CMake/releases/download/v3.19.3/cmake-3.19.3-Linux-x86_64.sh
         chmod +x cmake-3.19.3-Linux-x86_64.sh
         sudo ./cmake-3.19.3-Linux-x86_64.sh --skip-license --prefix=/usr/local