build(deps): bump actions/checkout from 5 to 6 (#3)

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/deploy.yml

@@ -33,7 +33,7 @@ jobs:
             os: windows-latest
     name: Deploy ${{ matrix.target }}
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Install Rust
       run: ci/install-rust.sh stable ${{ matrix.target }}
     - name: Build asset
@@ -50,7 +50,7 @@ jobs:
       id-token: write
     environment: publish
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install Rust (rustup)
         run: rustup update stable --no-self-update && rustup default stable
       - name: Authenticate with crates.io

.github/workflows/main.yml

@@ -31,7 +31,7 @@ jobs:
             target: x86_64-pc-windows-msvc
     name: ${{ matrix.name }}
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Install Rust
       run: bash ci/install-rust.sh ${{ matrix.rust }} ${{ matrix.target }}
     - name: Build and run tests
@@ -42,7 +42,7 @@ jobs:
   format:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Update Rust
         run: rustup update stable --no-self-update && rustup default stable
       - run: rustup component add rustfmt
@@ -51,7 +51,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Update Rust
         run: rustup update stable --no-self-update && rustup default stable
       - run: rustup component add clippy
@@ -60,7 +60,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Update Rust
       run: rustup update stable --no-self-update && rustup default stable
     - name: Build