Update cmake-multi-platform.yml

.github/workflows/cmake-multi-platform.yml

@@ -46,7 +46,17 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+
+      # Add a step to set up Python
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.11' # Specify the Python version you need
 
+    # Add a step to install Pybind11 using pip
+    - name: Install Pybind11
+      run: python -m pip install pybind11
+
     - name: Set reusable strings
       # Turn repeated input strings (such as the build output directory) into step outputs. These step outputs can be used throughout the workflow file.
       id: strings