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

Author: renovate[bot]

.github/workflows/build-test.yml

@@ -243,7 +243,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@nightly

.github/workflows/release.yml

@@ -93,7 +93,7 @@ jobs:
       tag: ${{ steps.version.outputs.tag }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           token: ${{ secrets.GITHUB_TOKEN }}