Update start-exercise workflow to v0.8.1

Co-authored-by: FidelusAleksander <[email protected]>

Author: Copilot

.github/workflows/0-start-exercise.yml

@@ -16,7 +16,7 @@ env:
 jobs:
   start_exercise:
     name: Start Exercise
-    uses: skills/exercise-toolkit/.github/workflows/[email protected].0
+    uses: skills/exercise-toolkit/.github/workflows/[email protected].1
     with:
       exercise-title: "Hello GitHub Actions"
       intro-message: "Create and run a GitHub Actions workflow."