[Draft] Migrate CircleCI to Ruby 3.3#1290

Draft

iBotPeaches wants to merge 6 commits intofastlane:masterfrom

iBotPeaches:drop-ruby2.x

Commits on Oct 20, 2025

build: set gem location as vendor/bundle
iBotPeaches
committed

Commits on Nov 6, 2025

Commits on Nov 10, 2025

chore: test personal docker image
iBotPeaches
committed

Commits on Nov 11, 2025

build: upgrade to modern rubocop
iBotPeaches
committed