Bump actions/upload-artifact from 4.3.1 to 4.3.3

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4.3.1 to 4.3.3.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4.3.1...v4.3.3)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/main.yml

@@ -20,7 +20,7 @@ jobs:
           authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
       - run: nix-shell --pure --run 'make pages'
       - name: Upload pages
-        uses: actions/[email protected].1
+        uses: actions/[email protected].3
         with:
           name: pages
           path: build