Bump actions/checkout from 6.0.3 to 7.0.0

Bumps [actions/checkout](https://github.com/actions/checkout) from 6.0.3 to 7.0.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v6.0.3...v7.0.0)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 7.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -16,7 +16,7 @@ jobs:
     name: Test on ${{ matrix.os }}-python-${{ matrix.python-version }}
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v6.0.3
+        uses: actions/checkout@v7.0.0
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6.2.0
@@ -52,7 +52,7 @@ jobs:
     runs-on: ubuntu-24.04
     timeout-minutes: 15
     steps:
-      - uses: actions/checkout@v6.0.3
+      - uses: actions/checkout@v7.0.0
       - name: Set up Python 3.13
         uses: actions/setup-python@v6.2.0
         with:
@@ -68,7 +68,7 @@ jobs:
     runs-on: ubuntu-24.04
     timeout-minutes: 15
     steps:
-      - uses: actions/checkout@v6.0.3
+      - uses: actions/checkout@v7.0.0
       - name: Set up Python 3.13
         uses: actions/setup-python@v6.2.0
         with:

.github/workflows/release.yaml

@@ -19,7 +19,7 @@ jobs:
     steps:
     - name: Checkout repository
       id: repo
-      uses: actions/checkout@v6.0.3
+      uses: actions/checkout@v7.0.0
 
     - name: Set up Python
       uses: actions/setup-python@v6.2.0
@@ -47,7 +47,7 @@ jobs:
     steps:
 
       - name: checkout
-        uses: actions/checkout@v6.0.3
+        uses: actions/checkout@v7.0.0
 
       - name: Change version in repo
         run: sed -i "s/__version__ =.*/__version__ = \"${{ github.event.inputs.version }}\"/g" crossflow/__init__.py
@@ -87,7 +87,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6.0.3
+        uses: actions/checkout@v7.0.0
         with:
           ref: main
 
@@ -118,7 +118,7 @@ jobs:
     steps:
 
     - name: checkout
-      uses: actions/checkout@v6.0.3
+      uses: actions/checkout@v7.0.0
       with:
         ref: main