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

Author: renovate[bot]

.github/workflows/clippy.yml

@@ -28,7 +28,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install Rust toolchain
         uses: actions-rs/toolchain@v1
@@ -75,7 +75,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install Rust toolchain
         uses: actions-rs/toolchain@v1

.github/workflows/release.yml

@@ -37,7 +37,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install Rust
         if: matrix.os != 'ubuntu-latest'