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

.github/workflows/ci.yml

@@ -32,7 +32,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup Rust
         uses: dtolnay/rust-toolchain@stable

.github/workflows/code-quality.yml

@@ -14,7 +14,7 @@ jobs:
     name: Rust Code Quality
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@nightly
@@ -65,7 +65,7 @@ jobs:
     name: Frontend Code Quality
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install pnpm
         uses: pnpm/action-setup@v4

.github/workflows/release.yml

@@ -23,7 +23,7 @@ jobs:
 
     runs-on: ${{ matrix.platform }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install pnpm
         uses: pnpm/action-setup@v4

.github/workflows/security-audit.yml

@@ -9,7 +9,7 @@ jobs:
     name: Rust Security Audit
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install cargo-deny
         uses: taiki-e/install-action@cargo-deny
@@ -21,7 +21,7 @@ jobs:
     name: NPM Security Audit
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install pnpm
         uses: pnpm/action-setup@v4