tests.yml: Update to Ubuntu 24.04.

Signed-off-by: Chris PeBenito <chpebeni@linux.microsoft.com>

Author: pebenito

.github/workflows/tests.yml

@@ -20,7 +20,7 @@ env:
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
 
     strategy:
       fail-fast: false