fix: upgrade action runtime to node24

.github/workflows/test.yml

@@ -0,0 +1,34 @@
+name: Test action
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - id: extract
+        uses: ./
+        with:
+          pr_body: |
+            ## Type of change
+            bug fix
+
+            ## Purpose
+            testing node24 upgrade
+
+      - name: Verify outputs
+        run: |
+          if [ "${{ steps.extract.outputs.type_block }}" != "bug fix" ]; then
+            echo "type_block mismatch: '${{ steps.extract.outputs.type_block }}'"
+            exit 1
+          fi
+          if [ "${{ steps.extract.outputs.purpose_block }}" != "testing node24 upgrade" ]; then
+            echo "purpose_block mismatch: '${{ steps.extract.outputs.purpose_block }}'"
+            exit 1
+          fi
+          echo "OK"

action.yml

@@ -10,5 +10,5 @@ outputs:
   purpose_block:
     description: "Extracted markdown content under Purpose"
 runs:
-  using: "node20"
+  using: "node24"
   main: "dist/index.js"