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/changelog.yml

@@ -11,7 +11,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: main
           fetch-depth: 0

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up uv
         uses: astral-sh/setup-uv@v7

.github/workflows/docs.yaml

@@ -22,7 +22,7 @@ jobs:
       pull-requests: write
       issues: write
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Install the latest version of uv
       uses: astral-sh/setup-uv@v5
       with:

.github/workflows/json-tstring-ci.yml

@@ -25,7 +25,7 @@ jobs:
         working-directory: json-tstring
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up uv
         uses: astral-sh/setup-uv@v7

.github/workflows/publish-python.yml

@@ -41,7 +41,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up uv
         uses: astral-sh/setup-uv@v7
@@ -89,7 +89,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up uv
         uses: astral-sh/setup-uv@v7
@@ -138,7 +138,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up uv
         uses: astral-sh/setup-uv@v7

.github/workflows/publish-rust.yml

@@ -19,7 +19,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Rust
         uses: dtolnay/rust-toolchain@1.94.0
@@ -36,7 +36,7 @@ jobs:
       name: crates-io
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Rust
         uses: dtolnay/rust-toolchain@1.94.0
@@ -55,7 +55,7 @@ jobs:
       name: crates-io
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Rust
         uses: dtolnay/rust-toolchain@1.94.0
@@ -77,7 +77,7 @@ jobs:
       name: crates-io
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Rust
         uses: dtolnay/rust-toolchain@1.94.0
@@ -96,7 +96,7 @@ jobs:
       name: crates-io
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Rust
         uses: dtolnay/rust-toolchain@1.94.0

.github/workflows/release-check.yml

@@ -18,7 +18,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up uv
         uses: astral-sh/setup-uv@v7
@@ -63,7 +63,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up uv
         uses: astral-sh/setup-uv@v7

.github/workflows/release-draft.yml

@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 

.github/workflows/toml-tstring-ci.yml

@@ -25,7 +25,7 @@ jobs:
         working-directory: toml-tstring
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up uv
         uses: astral-sh/setup-uv@v7

.github/workflows/yaml-tstring-ci.yml

@@ -25,7 +25,7 @@ jobs:
         working-directory: yaml-tstring
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up uv
         uses: astral-sh/setup-uv@v7