Bump actions/checkout from 6 to 7 (#1103)

Bumps [actions/checkout](https://github.com/actions/checkout) from 6 to 7.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v6...v7)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '7'
  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/aot.yml

@@ -29,7 +29,7 @@ jobs:
       Python ${{ matrix.python-version }}
       ${{ matrix.os }} ${{ matrix.architecture }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Setup python
         uses: actions/setup-python@v6
         with:

.github/workflows/conda.yml

@@ -31,7 +31,7 @@ jobs:
       Conda
       ${{ matrix.os }} ${{ matrix.architecture }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Setup julia
         uses: julia-actions/setup-julia@v3
         with:

.github/workflows/system.yml

@@ -62,7 +62,7 @@ jobs:
       Python ${{ matrix.python-version }}
       ${{ matrix.os }} ${{ matrix.architecture }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Setup python
         uses: actions/setup-python@v6
         with: