build: Run CI on latest Ubuntu and Mac

Mac 13 runner is EOL'd.

Author: timmc-edx

.github/workflows/cli-tests.yml

@@ -23,9 +23,9 @@ jobs:
       matrix:
         os:
           - name: linux
-            image: ubuntu-24.04
+            image: ubuntu-latest
           - name: mac
-            image: macos-13
+            image: macos-latest
         python-version:
           - '3.11'
       fail-fast: false