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

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>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -13,7 +13,7 @@ jobs:
             feature-combinations: ${{ steps.cargo-toml-features.outputs.feature-combinations }}
         steps:
             - name: Check out repository
-              uses: actions/checkout@v5
+              uses: actions/checkout@v6
               with:
                   persist-credentials: false
             - name: Determine Cargo Features
@@ -32,7 +32,7 @@ jobs:
             CRATE_FEATURES: ${{ join(matrix.features, ',') }}
         steps:
             - name: Check out repository
-              uses: actions/checkout@v5
+              uses: actions/checkout@v6
               with:
                   persist-credentials: false
             - name: Print Rust version
@@ -57,7 +57,7 @@ jobs:
         if: startsWith(github.ref, 'refs/tags/')
         steps:
             - name: Check out repository
-              uses: actions/checkout@v5
+              uses: actions/checkout@v6
               with:
                   persist-credentials: false
             - name: Authenticate with registry

.github/workflows/docs.yml

@@ -17,7 +17,7 @@ jobs:
             pages: write
         steps:
             - name: Check out repository
-              uses: actions/checkout@v5
+              uses: actions/checkout@v6
               with:
                   persist-credentials: false
 

.github/workflows/pre-commit.yml

@@ -14,7 +14,7 @@ jobs:
             contents: read
         steps:
             - name: Check out repository
-              uses: actions/checkout@v5
+              uses: actions/checkout@v6
               with:
                   persist-credentials: false