correct workflow

Author: anthony-nhs

.github/workflows/sync_copilot.yml

@@ -7,15 +7,15 @@ on:
 
 jobs:
   sync-copilot-instructions:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     environment: create_pull_request
     permissions:
       contents: write
       pull-requests: write
 
     steps:
       - name: Sync shared instructions
-        uses: NHSDigital/eps-copilot-instructions@initial_instructions
+        uses: NHSDigital/eps-copilot-instructions@08241b83de78b996e7796806be8435314e9f0b7a
         with:
           common_workflows_ref: main
           calling_repo_base_branch: main