Fix: Set migration job as manual by default

.gitlab-ci.yml

@@ -30,6 +30,7 @@ migration:
       when: never # Ignore detached head jobs created by merge requests.
     - if: $CI_PIPELINE_SOURCE != "schedule"
       when: manual
+    - when: manual
   stage: commands
   script: 
     - dotnet run --project .\src\$DOTNET_MAIN_PROJECT_FOLDER -- --noDryRun