Update build.yml

Author: CADIndie

.github/workflows/build.yml

@@ -15,7 +15,7 @@ jobs:
       fail-fast: false
 
     name: "Build for Android ${{matrix.arch}}"
-    runs-on: ubuntu-20.04
+    runs-on: self-hosted
     steps:
     - name: Checkout repository
       uses: actions/checkout@v4