If you've added both taps, you'll now get this error:
```
% brew bundle
Tapping adoptopenjdk/openjdk
Using clang-format
Using node
Using swiftlint
Using yarn
Error: Cask adoptopenjdk8 exists in multiple taps:
homebrew/cask-versions/adoptopenjdk8
adoptopenjdk/openjdk/adoptopenjdk8
Installing adoptopenjdk8 has failed!
Homebrew Bundle failed! 1 Brewfile dependency failed to install.
```
Replacing `adoptopenjdk/openjdk` with `homebrew/cask-versions` fixes the
issue for future contributors. Existing contributors need to also run
`brew untap adoptopenjdk/openjdk`.