workflows: Run "daily" scenario every night

This covers the runs against the dnf and udisks daily COPRs. That's the
last bit to obsolete our fedora-testing refreshes.

.github/workflows/nightly.yml

@@ -19,4 +19,4 @@ jobs:
           mkdir -p ~/.config/cockpit-dev
           echo "${{ github.token }}" >> ~/.config/cockpit-dev/github-token
           TEST_OS=$(PYTHONPATH=bots python3 -c 'from lib.constants import TEST_OS_DEFAULT; print(TEST_OS_DEFAULT)')
-          bots/tests-trigger --force "-" "${TEST_OS}/updates-testing"
+          bots/tests-trigger --force "-" "${TEST_OS}/updates-testing" "${TEST_OS}/daily"