ci(deps): 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@65a9edc...fa0a91b)

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

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

.github/workflows/main.yml

@@ -349,7 +349,7 @@ jobs:
               api.clearlydefined.io:443
 
         - name: Download NuGet artifacts
-          uses: actions/download-artifact@65a9edc5881444af0b9093a5e628f2fe47ea3b2e
+          uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16
           with:
             name: nupkg
 
@@ -379,7 +379,7 @@ jobs:
             nuget.pkg.github.com:443
 
       - name: Download NuGet artifacts
-        uses: actions/download-artifact@65a9edc5881444af0b9093a5e628f2fe47ea3b2e
+        uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16
         with:
           name: nupkg