Bump actions/download-artifact from 4.1.7 to 4.1.8

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4.1.7 to 4.1.8.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4.1.7...v4.1.8)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/docs.yml

@@ -126,7 +126,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Download artifact
-        uses: actions/[email protected].7
+        uses: actions/[email protected].8
         with:
           # Artifact name
           name: docs_output # optional

.github/workflows/wheels.yml

@@ -116,7 +116,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Download sdist
-        uses: actions/[email protected].7
+        uses: actions/[email protected].8
         with:
           name: sdist
       - name: Set up Python
@@ -151,7 +151,7 @@ jobs:
         with:
           access_token: ${{ secrets.GITHUB_TOKEN }}
       - name: Download sdist
-        uses: actions/[email protected].7
+        uses: actions/[email protected].8
         with:
           name: linux-wheels
       - uses: actions/setup-python@v5
@@ -180,7 +180,7 @@ jobs:
         with:
           access_token: ${{ secrets.GITHUB_TOKEN }}
       - name: Download sdist
-        uses: actions/[email protected].7
+        uses: actions/[email protected].8
         with:
           name: ${{ matrix.os }}-wheels
       - uses: actions/setup-python@v5
@@ -205,7 +205,7 @@ jobs:
         with:
           access_token: ${{ secrets.GITHUB_TOKEN }}
       - name: Download all
-        uses: actions/[email protected].7
+        uses: actions/[email protected].8
       - name: Move to dist
         run: |
           mkdir dist