Ruby bindings to RE2, a "fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python".
As Ubuntu 22.04 has libabsl-dev available, there's no need to manually install it and we switch to using apt -f install so it'll install the dependency automatically.
To match the ubuntu-latest GitHub runner, upgrade the re2 ABI tests to run against Ubuntu 22.04 using the newly compiled libre2-dev packages from https://github.com/mudge/re2-ci/releases/tag/v22.04
As Ubuntu 22.04 has libabsl-dev available, there's no need to manually install it and we switch to using apt -f install so it'll install the dependency automatically.