CI: run "vulkaninfo" before tests to give us some idea of what the CI environment looks like

Author: azonenberg

.github/workflows/build-ubuntu.yml

@@ -148,6 +148,7 @@ jobs:
       run: |
         export VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/lvp_icd.x86_64.json
         cd build
+        vulkaninfo
         ctest --output-on-failure
 
     - name: Upload Artifacts