[CI] Fix HDF5 dependencies

Author: lukbrb

.github/workflows/test.yml

@@ -16,11 +16,11 @@ jobs:
           submodules: 'recursive'
           fetch-depth: 0
 
-      - name: Install build dependencies (Linux)
-        if: runner.os == 'Linux'
+      - name: Install build dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install -y build-essential cmake python3-venv python3-dev
+          # Install HDF5 dev packages so CMake/FindHDF5 can locate the libraries and headers
+          sudo apt-get install -y build-essential cmake python3-venv python3-dev libhdf5-dev pkg-config
 
       - name: Configure and build fv2d
         run: |