Enhance artifact upload/download in sync workflow

Added options to include hidden files and handle no files found in artifact upload and download steps.

Author: rffontenelle

.github/workflows/sync.yml

@@ -117,6 +117,8 @@ jobs:
         uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
         with:
           name: python-${{ env.PYDOC_VERSION }}
+          include-hidden-files: true
+          if-no-files-found: error
           path: |
             ${{ env.PYDOC_LANG_DIR }}/.tx/config
             ${{ env.PYDOC_LANG_DIR }}/potodo.md
@@ -165,6 +167,7 @@ jobs:
         uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           name: python-${{ env.PYDOC_VERSION }}
+          path: ${{ env.PYDOC_LANG_DIR }}
 
       # 3- Commit and push changed files depending on the event name