install doxygen

Signed-off-by: Ruby Iris Juric <[email protected]>

Author: Sorixelle

.github/workflows/build.yml

@@ -21,8 +21,9 @@ jobs:
           ref: fix-sdk-docs-build
           submodules: true
 
-      - name: Install Python dependencies
+      - name: Install build dependencies
         run: |
+          apt install doxygen
           pip install -U pip
           pip install -r requirements.txt