Update docs-build.yml

Author: pavly-gerges

.github/workflows/docs-build.yml

@@ -33,6 +33,8 @@ jobs:
         uses: actions/checkout@v4
       - name: Setup Pages
         uses: actions/configure-pages@v5
+      - name: Setup Doxygen
+        run: sudo apt install doxygen
       - name: Build docs using Doxygen
         run: doxygen ./docs/doxygen-config 
       - name: Upload artifact