ci: update GitHub Actions runtimes

Author: Brite

.github/workflows/backend-ci.yml

@@ -21,10 +21,10 @@ jobs:
         working-directory: ./apps/backend
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Use Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v7
         with:
           node-version: '20'
           cache: 'npm'

.github/workflows/contract-ci.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable

.github/workflows/frontend-ci.yml

@@ -22,10 +22,10 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v7
         with:
           node-version: '20'
           cache: 'npm'