Update python-test.yaml

Updating os to Ubuntu 24.04

Author: bobtabor-msft

.github/workflows/python-test.yaml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ["ubuntu-20.04"]
+        os: ["ubuntu-24.04"]
         python_version: ["3.10", "3.11"]
     services:
       postgres: