Update deploy_github_pages.yml

.github/workflows/deploy_github_pages.yml

@@ -30,3 +30,14 @@ jobs:
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}
         publish_dir: ./build
+    - name: Deploy to mirror repo
+        uses: cpina/github-action-push-to-another-repository@main
+        env:
+          API_TOKEN_GITHUB: ${{ secrets.EXTERNAL_REPOSITORY_PERSONAL_ACCESS_TOKEN }}
+        with:
+          source-directory: public/
+          destination-github-username: fxclient
+          destination-repository-name: fxclient.github.io
+          user-email: mohsenemx@gmail.com
+          # It defaults to `main`
+          target-branch: "gh-pages"