fix(workflow): correct typo in test-upgrade-legacy job

- Change `ec:qho` to `echo` in the test-upgrade-legacy workflow
- Ensure proper end of group logging in the job

Author: CoMfUcIoS

.github/workflows/test-upgrade-legacy.yaml

@@ -122,7 +122,7 @@ jobs:
             primary_host=$primary \
             legacy_hosts=$compiler \
             --stream
-          ec:qho ::endgroup::
+          echo ::endgroup::
       - name: Check if compiler is converted
         timeout-minutes: 120
         run: |