Bump actions/upload-pages-artifact from 3 to 4 (#494)

Author: dependabot[bot]

.github/workflows/api-docs.yml

@@ -30,7 +30,7 @@ jobs:
       - name: Generate API docs site
         run: npx typedoc
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
         with:
           path: ./docs/api