Bump actions/download-artifact from 7 to 8

Bumps [actions/download-artifact](https://github.com/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/download-artifact
  dependency-version: '8'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -61,7 +61,7 @@ jobs:
         id-token: write
         contents: read
       steps:
-        - uses: actions/download-artifact@v7
+        - uses: actions/download-artifact@v8
           with:
             name: build
         - uses: actions/setup-node@v6
@@ -87,7 +87,7 @@ jobs:
       id-token: write  # Required for OIDC
       contents: read
     steps:
-      - uses: actions/download-artifact@v7
+      - uses: actions/download-artifact@v8
         with:
           name: build
       - uses: actions/setup-node@v6