Update checkout action to v7

Author: eldryoth

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
     timeout-minutes: 45
     steps:
       - name: Checkout
-        uses: actions/checkout@v6.0.3
+        uses: actions/checkout@v7.0.0
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@1.96.0

.github/workflows/images.yml

@@ -28,7 +28,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6.0.3
+        uses: actions/checkout@v7.0.0
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v4.1.0