Bump actions/upload-pages-artifact from 3 to 4 (#2)

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Author: dependabot[bot]

.github/workflows/deploy-to-github-pages.yml

@@ -37,7 +37,7 @@ jobs:
         run: npm run build
 
       - name: Upload Pages Artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
         with:
           path: build