[3.14] gh-143284: Temporarily install Sphinx<9 to fix Chinese search (GH-143286)#143290

hugovk merged 1 commit intopython:3.14python/cpython:3.14from

miss-islington:backport-0aedf2f-3.14miss-islington/cpython:backport-0aedf2f-3.14Copy head branch name to clipboard