test: add setup-tasks.sh to TestCopilotSkillsMode file inventory

Author: Nimraakram12

tests/integrations/test_integration_copilot.py

@@ -616,6 +616,7 @@ def test_complete_file_inventory_skills_sh(self, tmp_path):
             ".specify/scripts/bash/common.sh",
             ".specify/scripts/bash/create-new-feature.sh",
             ".specify/scripts/bash/setup-plan.sh",
+            ".specify/scripts/bash/setup-tasks.sh",
             # Templates
             ".specify/templates/checklist-template.md",
             ".specify/templates/constitution-template.md",