tests: enable interfaces-account-control on UC24 and UC26

Author: maykathm

tests/main/interfaces-account-control/task.yaml

@@ -4,7 +4,7 @@ details: |
     This test makes sure that a snap using the account-control interface
     can handle the user accounts properly.
 
-systems: [ubuntu-core-16-64, ubuntu-core-18-64, ubuntu-core-20-64, ubuntu-core-22-64]
+systems: [ubuntu-core-16-64, ubuntu-core-18-64, ubuntu-core-20-64, ubuntu-core-22-64, ubuntu-core-24-64, ubuntu-core-26-64]
 
 environment:
     TSNAP: account-control-consumer