Update build-ubuntu.yml

Author: Al-ex-N

.github/workflows/build-ubuntu.yml

@@ -16,6 +16,9 @@ jobs:
 
     - name: Install required packages
       run: sudo apt-get update && sudo apt-get upgrade -y && sudo apt-get install libglib2.0-dev libpixman-1-dev
+    
+    - name: Clone repository with submodules
+      run: git clone --recursive https://github.com/AlexN-SM64/qemu-irix && cd qemu-irix
 
     - name: Configure
       run: ./configure --target-list=irix-linux-user --disable-werror