Downgrade to Ubuntu22 from 24

Author: AlexanderWells-diamond

.github/workflows/code.yml

@@ -171,7 +171,7 @@ jobs:
   # Check that the master branches of various upstream dependencies are
   # still compatible when used together
   master_branch_test:
-    runs-on: "ubuntu-latest"
+    runs-on: "ubuntu-22.04"
     steps:
       - name: Checkout Source
         uses: actions/checkout@v4