Remove old Linux Build

Author: andilippi

.github/workflows/build.yml

@@ -143,7 +143,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ubuntu: ['ubuntu-20.04', 'ubuntu-22.04']
+        ubuntu: ['ubuntu-22.04']
     steps:
       - name: Checkout
         uses: actions/checkout@v4.1.1