Bump the actions-deps group with 3 updates

Bumps the actions-deps group with 3 updates: [actions/checkout](https://github.com/actions/checkout), [actions/upload-artifact](https://github.com/actions/upload-artifact) and [actions/download-artifact](https://github.com/actions/download-artifact).


Updates `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)

Updates `actions/upload-artifact` from 6 to 7
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v6...v7)

Updates `actions/download-artifact` from 7 to 8
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v7...v8)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions-deps
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions-deps
- dependency-name: actions/download-artifact
  dependency-version: '8'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions-deps
...

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

Author: dependabot[bot]

.github/workflows/build.yml

@@ -10,7 +10,7 @@ jobs:
     name: Lint
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
         with:
           python-version: '3.13'
@@ -23,7 +23,7 @@ jobs:
     name: Build dist
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-python@v6
         with:
@@ -54,13 +54,13 @@ jobs:
           mkdir jsdist
           jlpm pack --filename jsdist/jupyter-offlinenotebook-jlpmpack.tgz
 
-      - uses: actions/upload-artifact@v6
+      - uses: actions/upload-artifact@v7
         with:
           name: dist
           path: dist
           if-no-files-found: error
 
-      - uses: actions/upload-artifact@v6
+      - uses: actions/upload-artifact@v7
         with:
           name: jsdist
           path: jsdist
@@ -82,7 +82,7 @@ jobs:
     # Includes geckdriver and firefox
     # https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2204-Readme.md
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
@@ -97,7 +97,7 @@ jobs:
           cache: yarn
 
       - name: Download artifacts from build
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
 
       - name: Install dependencies
         run: python -mpip install -r dev-requirements-jl${{ matrix.jupyterlab-major }}.*
@@ -123,7 +123,7 @@ jobs:
       id-token: write
     steps:
       - name: Download artifacts from build
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           name: dist
           path: dist
@@ -158,7 +158,7 @@ jobs:
           echo "NPM_TAG=$NPM_TAG" >> "$GITHUB_ENV"
 
       - name: Download artifacts from build
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           name: jsdist
           path: jsdist