build(deps): bump actions/upload-artifact from 4 to 5 (#2976)

Bumps
[actions/upload-artifact](https://github.com/actions/upload-artifact)
from 4 to 5.

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build.yml

@@ -139,7 +139,7 @@ jobs:
 
       # Upload the book now to retain it in case mdbook test fails.
       - name: Upload book
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: comprehensive-rust-${{ matrix.language }}
           path: book/