`jekyll-serve` fails due to outdated ruby version

[LeoniePhiline]

Dependency activesupport-8.0.2 has bumped its ruby minimum version requirement to >= 3.2.0. This makes the live-reloading development server fail:

$  docker run --rm -p 8000:4000 \
    -v $(pwd):/site \
    bretfisher/jekyll-serve
Bundler 2.3.27 is running, but your lockfile was generated with 2.2.10. Installing Bundler 2.2.10 and restarting using that version.
Fetching gem metadata from https://rubygems.org/.
Fetching bundler 2.2.10
Installing bundler 2.2.10
Calling `DidYouMean::SPELL_CHECKERS.merge!(error_name => spell_checker)' has been deprecated. Please call `DidYouMean.correct_error(error_name, spell_checker)' instead.
Fetching gem metadata from https://rubygems.org/.........
activesupport-8.0.2 requires ruby version >= 3.2.0, which is incompatible with
the current version, ruby 3.1.7p261

Reported upstream at:

BretFisher/jekyll-serve#92 (comment)