CI housekeeping

[kianmeng]

Summary of changes

Support Elixir 1.17/Erlang OTP 27.

List of changes:

• set min Elixir requirement to 1.13
• support Elixir 1.13/1.17 and Erlang OTP 25/27 in CI
• add additional linting check
• bump deps to resolve 1.17 warnings
• remove unused deps
• code format

Checklist

• [ ] New functions have typespecs, changed functions were updated
• [ ] Same for documentation, including moduledocs
• [ ] Tests were added or updated to cover changes
• [x] Commits were squashed into a single coherent commit
• [ ] Notes added to CHANGELOG file which describe changes at a high-level