Bump edtf-humanize from 2.0.1 to 2.1.0

Bumps edtf-humanize from 2.0.1 to 2.1.0.

Release notes

Sourced from edtf-humanize's releases.

v2.1.0

What's Changed

• rubocop appeasement by @corylown in https://github.com/corylown/edtf-humanize/pull/36
• Allow Ruby version 3 by @animosic in https://github.com/corylown/edtf-humanize/pull/37

Commits

• 781d785 Fix up tests
• ebdadcd Merge pull request #37 from animosic/develop
• 87e7087 Allow Ruby version 3
• a8b59c6 Update README
• See full diff in compare view