fix: Revert previous change (#651)

Ooops, I should stick to my guns. Gemini has been pushing me to make this change for days, and I finally conceded. Boy was I wrong!!!! UGH. I miss the 1990s.

Author: willum070

samples/find-changes.sh

@@ -77,5 +77,4 @@ echo "Changed (added or modified) subfolders in '$PROJECTS_ROOT_DIR':"
 echo "$UNIQUE_CHANGED_WORKSPACES"
 
 # Set the output variable for GitHub Actions
-# set_gh_output "changed_workspaces" "$UNIQUE_CHANGED_WORKSPACES"
-echo "changed_workspaces=$UNIQUE_CHANGED_WORKSPACES" >> "$GITHUB_OUTPUT"
+set_gh_output "changed_workspaces" "$UNIQUE_CHANGED_WORKSPACES"