Install gettext

Author: rffontenelle

.github/workflows/check.yml

@@ -213,6 +213,9 @@ jobs:
       - name: setup
         run: ./scripts/setup.sh
 
+      - name: Install gettext
+        run: sudo apt update -y && sudo apt install gettext -y
+
       - name: Generate template files without literal-block
         working-directory: cpython/Doc
         run: |