Fix tzdata terminating host application v1.1

[shegx01]

Summary of changes

Fix issue with tzdata v1.1 terminating the host application server

I'll review the commits, so I mostly want to understand the "why" rather than the "what"

Checklist

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

[corroded]

@shegx01 could it be because of this? lau/tzdata#148

I keep encountering this in our logs - but it shouldn't terminate your host application server unless it fails to report errors or something? 🤔