fix: update upload-pages-artifact action to v3 in deploy-docs.yml

Author: dataGriff

.github/workflows/deploy-docs.yml

@@ -52,7 +52,7 @@ jobs:
         run: mkdocs build --strict
 
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v2
+        uses: actions/upload-pages-artifact@v3
         with:
           path: ./site