chore(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/changesets.yml

@@ -15,7 +15,7 @@ jobs:
       runs-on: ubuntu-latest
       steps:
          - name: Checkout Repo
-           uses: actions/checkout@v5
+           uses: actions/checkout@v6
            with:
               fetch-depth: 0
 

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
          matrix:
             node-version: [18, 20, 22, 23, 24, 25]
       steps:
-         - uses: actions/checkout@v5
+         - uses: actions/checkout@v6
          - name: Use Node.js ${{ matrix.node-version }}
            uses: actions/setup-node@v6
            with:
@@ -33,7 +33,7 @@ jobs:
    build-windows:
       runs-on: windows-latest
       steps:
-         - uses: actions/checkout@v5
+         - uses: actions/checkout@v6
          - name: Use Node.js 24
            uses: actions/setup-node@v6
            with:

.github/workflows/quality.yml

@@ -13,7 +13,7 @@ jobs:
    lint:
       runs-on: ubuntu-latest
       steps:
-         - uses: actions/checkout@v5
+         - uses: actions/checkout@v6
          - name: Use Node.js
            uses: actions/setup-node@v6
            with: