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/build.yml

@@ -1,4 +1,4 @@
-# .github/workflows/build.yml
+# .github/workflows/build.yml
 # Build and Release workflow for MathExpressions
 #
 # - Trigger on push to any branch, on version tags (e.g., v1.2.3), or on manual dispatch.
@@ -264,7 +264,7 @@ jobs:
       # Download publish artifact from previous job
       # https://github.com/marketplace/actions/download-a-build-artifact
       - name: 📥 Download deployment folder as a build artifact
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           name: ${{env.ARTIFACT_PACKAGE}}
           path: ./release/