chore(deps): bump actions/checkout from 4 to 6 (#652)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...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/ci.yml

@@ -18,7 +18,7 @@ jobs:
     name: Lint and Test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: "recursive"
 

.github/workflows/docs.yml

@@ -21,7 +21,7 @@ jobs:
     env:
       CI: "TRUE"
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         # We need to additionally fetch the gh-pages branch for mike deploy
         with:
           fetch-depth: 0

.github/workflows/rust-release-pyo3-bytes.yml

@@ -12,7 +12,7 @@ jobs:
     permissions:
       id-token: write # Required for OIDC token exchange
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: rust-lang/crates-io-auth-action@v1
         id: auth
       - run: cargo publish -p pyo3-bytes

.github/workflows/rust-release-pyo3-object_store.yml

@@ -12,7 +12,7 @@ jobs:
     permissions:
       id-token: write # Required for OIDC token exchange
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: rust-lang/crates-io-auth-action@v1
         id: auth
       - run: cargo publish -p pyo3-object_store

.github/workflows/test-python.yml

@@ -18,7 +18,7 @@ jobs:
     name: Run pre-commit on Python code
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-python@v5
         with:
@@ -46,7 +46,7 @@ jobs:
       matrix:
         python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.14t"]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable

.github/workflows/wheels.yml

@@ -43,7 +43,7 @@ jobs:
             target: ppc64le
             manylinux: auto
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
@@ -90,7 +90,7 @@ jobs:
           - runner: ubuntu-latest
             target: armv7
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
@@ -131,7 +131,7 @@ jobs:
           - runner: windows-latest
             target: x64
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       # There seem to be linking errors on Windows with the uv-provided Python
       # executables, so we use the Python versions provided by github actions
       # for now.
@@ -170,7 +170,7 @@ jobs:
           - runner: macos-15
             target: aarch64
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
@@ -203,7 +203,7 @@ jobs:
   sdist:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Build sdist
         uses: PyO3/maturin-action@v1
         with: