chore: update actions to Node.js 24 compatible versions

Author: vatnode-bot

.github/workflows/test.yml

@@ -6,7 +6,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - uses: actions/setup-python@v5
         with:

.github/workflows/update.yml

@@ -23,7 +23,7 @@ jobs:
       contents: write
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Download latest VAT rates
         run: |