Update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/deploy.yml

@@ -10,7 +10,7 @@ jobs:
     steps:
       - uses: google/wireit@setup-github-actions-caching/v1
       - name: Checkout
-        uses: actions/checkout@v3.6.0
+        uses: actions/checkout@v4.1.1
 
       - name: Install
         run: |

.github/workflows/test.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - uses: google/wireit@setup-github-actions-caching/v1
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js 20
         uses: actions/setup-node@v3
         with: