Update to upload-artifact@v4 (#2604)

Author: odow

.github/workflows/documentation.yml

@@ -26,7 +26,7 @@ jobs:
           DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }} # For authentication with SSH deploy key
           DOCUMENTER_LATEX_DEBUG: ${{ github.workspace }}/latex-debug-logs
         run: julia --color=yes --project=docs/ docs/make.jl
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         if: ${{ always() }}
         with:
           name: PDF build logs