ci: pin python version for the translations (#13130)

The commit pins the version of Python used by the automatic translations
workflow which would otherwise fail with `node-gyp` errors.

Signed-off-by: vince-fugnitto <vincent.fugnitto@ericsson.com>

.github/workflows/translation.yml

@@ -21,7 +21,7 @@ jobs:
  - name: Use Python 3.x
  uses: actions/setup-python@v4
  with:
- python-version: "3.x"
+ python-version: "3.11"
 
  - name: Install and Build
  shell: bash