build(deps): bump actions/checkout from 5 to 6

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>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -17,7 +17,7 @@ jobs:
   pre-commit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
         with:
           python-version: "3.12"
@@ -34,7 +34,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Lint
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
         with:
           python-version: "3.12"
@@ -48,7 +48,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Mambaforge
         uses: conda-incubator/setup-miniconda@v3
         with:

.github/workflows/docker.yml

@@ -15,7 +15,7 @@ jobs:
       packages: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Log in to the Container registry
         uses: docker/login-action@v4

.github/workflows/docs.yml

@@ -18,7 +18,7 @@ jobs:
         run: |
           echo "date=$(/bin/date --date='TZ="America/Los_Angeles"' -u "+%Y%m%d")" >> $GITHUB_OUTPUT
           cat $GITHUB_OUTPUT
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Mambaforge
         uses: conda-incubator/setup-miniconda@v3
         with:

.github/workflows/format.yml

@@ -9,7 +9,7 @@ jobs:
     name: runner / black
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Check files using the black formatter
         uses: rickstaa/action-black@v1
         id: action_black

.github/workflows/release.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Set up Python
       uses: actions/setup-python@v5
       with: