Update build-ubuntu.yml

Author: Al-ex-N

.github/workflows/build-ubuntu.yml

@@ -15,7 +15,7 @@ jobs:
     - uses: actions/checkout@v4
 
     - name: Install required packages
-      run: sudo apt-get update && sudo apt-get upgrade -y && sudo apt-get install build-essential libglib2.0-dev
+      run: sudo apt-get update && sudo apt-get upgrade -y && sudo apt-get install build-essential libglib2.0-dev libpixman-1-0
 
     - name: Configure
       run: ./configure --target-list=irix-linux-user