Update update.yml for manual update

.github/workflows/update.yml

@@ -2,13 +2,14 @@ name: Weekly Article Matching
 on:
   schedule:
     - cron: '0 0 * * 0'
+  workflow_dispatch:
 
 jobs:
   run_script:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Set up Python
         uses: actions/setup-python@v2