Bump actions/checkout from 5 to 6 (#282)

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/Benchmark.yml

@@ -12,7 +12,7 @@ jobs:
         runs-on: ubuntu-latest
         if: contains(github.event.pull_request.labels.*.name, 'benchmark')
         steps:
-            - uses: actions/checkout@v5
+            - uses: actions/checkout@v6
             - uses: julia-actions/setup-julia@v2
               with:
                 version: "1"

.github/workflows/Documentation.yml

@@ -19,7 +19,7 @@ jobs:
       statuses: write
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
           version: '1'

.github/workflows/Test-GPU.yml

@@ -26,7 +26,7 @@ jobs:
       matrix:
         julia-version: ['1.10', '1.11']
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.julia-version }}

.github/workflows/Test.yml

@@ -23,7 +23,7 @@ jobs:
         julia-version: ['1.10', '1.11', '1.12']
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.julia-version }}