chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/autofix.yml

@@ -42,7 +42,7 @@ jobs:
       cancel-in-progress: false
     steps:
     - name: Checkout Code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Setup Rust Toolchain
       uses: actions-rust-lang/setup-rust-toolchain@v1
       with:

.github/workflows/ci.yml

@@ -39,7 +39,7 @@ jobs:
       contents: read
     steps:
     - name: Checkout Code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Setup Rust Toolchain
       uses: actions-rust-lang/setup-rust-toolchain@v1
       with:
@@ -61,7 +61,7 @@ jobs:
       contents: read
     steps:
     - name: Checkout Code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Setup Rust Toolchain
       uses: actions-rust-lang/setup-rust-toolchain@v1
       with: