Bump actions/upload-artifact from 4.3.0 to 4.3.1

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4.3.0 to 4.3.1.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@26f96df...5d5d22a)

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

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

.github/workflows/build.yml

@@ -20,7 +20,7 @@ jobs:
         run: make static-all
 
       - name: Upload proposed static website for review
-        uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8
+        uses: actions/upload-artifact@5d5d22a31266ced268874388b861e4b58bb5c2f3
         with:
           name: Proposed static website
           path: output