Bump gtfs-lib to 4.3.0

[landonreed]

Checklist

• Appropriate branch selected (all PRs must first be merged to dev before they can be merged to master)
• Any modified or new methods or classes have helpful JavaDoc and code is thoroughly commented
• The description lists all applicable issues this PR seeks to resolve
• The description lists any configuration setting(s) that differ from the default settings
• All tests and CI builds passing

Description

This bumps the gtfs-lib version to 4.3.0. This version has a number of bug fixes and enhancements for MTC.

[codecov-io]

Codecov Report

Merging #193 into dev will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##               dev    #193   +/-   ##
=======================================
  Coverage     6.21%   6.21%           
  Complexity     115     115           
=======================================
  Files          133     133           
  Lines         6954    6954           
  Branches       912     912           
=======================================
  Hits           432     432           
  Misses        6486    6486           
  Partials        36      36

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[landonreed]

🎉 This PR is included in version 3.4.0 🎉

The release is available on GitHub release

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