Add step to copy translations from scientific python translations repo

Author: goanpeca

.github/workflows/docbuild-and-upload.yml

@@ -50,6 +50,11 @@ jobs:
       # https://pytest-qt.readthedocs.io/en/latest/troubleshooting.html#github-actions-azure-pipelines-travis-ci-and-gitlab-ci-cd
       run: sudo apt-get update && sudo apt-get install -y libegl1 libopengl0
 
+    - name: Download translations
+      run: |
+        curl -L -O https://github.com/Scientific-Python-Translations/pandas-translations/archive/refs/heads/main.tar.gz | tar xz
+        tar -xvf main.tar.gz
+        rsync -av --delete pandas-translations-main/content web/pandas/
     - name: Test website
       run: python -m pytest web/