Update update-translation.yml

Downgrade python to 3.10.x

Maybe this will fix the changed behaviour of POT files suddenly being marked as changed

.github/workflows/update-translation.yml

@@ -37,7 +37,7 @@ jobs:
             -   name: Setup Python and pip
                 uses: actions/setup-python@v4
                 with:
-                    python-version: 3.11.x
+                    python-version: 3.10.x
                     cache: pip
                     cache-dependency-path: .github/workflows/requirements-conan-package.txt