Bump actions/checkout from 5 to 6 in the actions group (#441)

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/lint.yml

@@ -8,5 +8,5 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: tox-dev/action-pre-commit-uv@v1

.github/workflows/main.yml

@@ -52,7 +52,7 @@ jobs:
             python: "3.14"
             experimental: false
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Set up Python ${{ matrix.python }}
       uses: actions/setup-python@v6
       if: "!endsWith(matrix.python, '-dev')"

.github/workflows/mypy.yml

@@ -14,7 +14,7 @@ jobs:
     name: Check code with mypy
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
         with:
           cache: "pip"

.github/workflows/publish.yml

@@ -15,7 +15,7 @@ jobs:
       id-token: write
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Set up Python
       uses: actions/setup-python@v6
       with: