chore: update ubuntu version (#1542)

Author: carlosmiei

.github/workflows/python-app.yml

@@ -32,7 +32,7 @@ jobs:
 
   build:
     needs: lint
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     env:
       PROXY: "http://51.83.140.52:16301"
       TEST_TESTNET: "true"