ci: also verify the example sbom

Author: Avus-c

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

@@ -6,7 +6,6 @@ on:
   push:
     branches: [ "main" ]
   pull_request:
-    branches: [ "main" ]
 
 jobs:
   build:
@@ -52,13 +51,17 @@ jobs:
     - name: setup python
       uses: actions/setup-python@v3
       with:
-        python-version: "3.10"
+        python-version: "3.12"
 
     - name: Install spdx-tools
       run: |
         python -m pip install --upgrade pip
         pip install spdx-tools
 
+    - name: Validate example sbom
+      run: |
+        pyspdxtools -i ${{ github.workspace }}/example/output/*.spdx
+
     - name: Configure CMake
       run: >
         cmake -B ${{ steps.strings.outputs.build-output-dir }}