Bump Gem Version

Workflow:

- [ ] Determine the new version number
- [ ] Increment the declared version number
- [ ] Update artifacts
- [ ] Commit with changelog

Determine the new version number

• Review changes since the last time @lib/natural_earth/version.rb was updated

• Follow semantic versioning rules to determine whether this is a major, minor or patch version change

Increment the declared version number

• Increment the version in @lib/natural_earth/version.rb

Update artifacts

• Run bundle install
  • This will update @Gemfile.lock

Commit with changelog

• Prepare a conventional commit message with a concise summary of changes since the last version bump
• IMPORTANT: be sure to only list commits SINCE the previous "chore(version)" commit
• IMPORTANT: omit the previous "chore(version)" commits from the listing

chore(version): 1.2.3

1e646e0 docs: reorg and refresh
0354eaf feat: add dual-axis buffer control
ee6bbb0 fix: ne.csv access bug

Commit the change.