ci(deps): bump actions/checkout from 4 to 7

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name == 'pull_request'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
       - uses: actions/setup-node@v4
@@ -33,7 +33,7 @@ jobs:
     name: Contract tests & build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
@@ -101,7 +101,7 @@ jobs:
     name: Script syntax check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Check deploy.sh syntax
         run: bash -n scripts/deploy.sh
@@ -125,7 +125,7 @@ jobs:
       run:
         working-directory: frontend
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Setup pnpm
         uses: pnpm/action-setup@v4
@@ -174,7 +174,7 @@ jobs:
       run:
         working-directory: frontend
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Setup pnpm
         uses: pnpm/action-setup@v4
@@ -226,7 +226,7 @@ jobs:
       NEXT_PUBLIC_STELLAR_NETWORK: testnet
       NEXT_PUBLIC_RPC_URL: https://soroban-testnet.stellar.org
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Setup pnpm
         uses: pnpm/action-setup@v4

.github/workflows/preview-deployment.yml

@@ -19,7 +19,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Setup Node.js
         uses: actions/setup-node@v4

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
         working-directory: frontend
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0          # full history for changelog generation
 

.github/workflows/reproducible-build.yml

@@ -37,7 +37,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       # ── Build the reproducible Docker image ──────────────────────────────
       # The image installs the compiler and pre-fetches all Cargo deps but