add clang

Author: dschuff

.github/actions/install-basic-packages/action.yml

@@ -11,7 +11,7 @@ runs:
     - name: Install packages
       run: |
         sudo apt-get update
-        sudo apt-get install -y xz-utils build-essential ninja-build cmake wget ccache pkg-config
+        sudo apt-get install -y xz-utils build-essential ninja-build cmake wget ccache pkg-config clang
       shell: bash