chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/gh-pages.yaml

@@ -11,7 +11,7 @@ jobs:
     runs-on: "ubuntu-latest"
 
     steps:
-      - uses: "actions/checkout@v4"
+      - uses: "actions/checkout@v6"
       - uses: astral-sh/setup-uv@v5
         with:
           version: "0.6.3"

.github/workflows/lint.yaml

@@ -13,7 +13,7 @@ jobs:
         python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}

.github/workflows/palette.yml

@@ -12,7 +12,7 @@ jobs:
   createPullRequest:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: astral-sh/setup-uv@v5
         with:
           version: "0.6.3"

.github/workflows/release-please.yaml

@@ -28,7 +28,7 @@ jobs:
     needs: release-please
     if: ${{ needs.release-please.outputs.release_created }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
         with:
           python-version-file: "pyproject.toml"

.github/workflows/test.yaml

@@ -15,7 +15,7 @@ jobs:
         python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}