Remove trailing whitespace in copilot-setup-steps.yml

Co-authored-by: chrisjsewell <2997570+chrisjsewell@users.noreply.github.com>

Author: Copilot

.github/workflows/copilot-setup-steps.yml

@@ -15,12 +15,12 @@ jobs:
   # The job MUST be called `copilot-setup-steps` or it will not be picked up by Copilot.
   copilot-setup-steps:
     runs-on: ubuntu-latest
-    
+
     # Set the permissions to the lowest permissions possible needed for your steps.
     # Copilot will be given its own token for its operations.
     permissions:
       contents: read
-    
+
     # You can define any steps you want, and they will run before the agent starts.
     # If you do not check out your code, Copilot will do this for you.
     steps: