lint.sh: quiet output for sphinx-build

scripts/lint.sh

@@ -23,7 +23,7 @@ cd cpython/Doc
 # Disable literal blocks and update PO
 sed -i "/^\s*'literal-block',/s/ '/ #'/" conf.py
 # TODO: use `make -C .. gettext` when there are only Python >= 3.12
-opts='-E -b gettext -D gettext_compact=0 -d build/.doctrees . build/gettext' 
+opts='-E -b gettext -q -D gettext_compact=0 -d build/.doctrees . build/gettext' 
 make build ALLSPHINXOPTS="$opts"
 # Update translation files with latest POT
 sphinx-intl update -d locale -p build/gettext -l pt_BR