ci: fix coverage report uploads

[evansiroky]

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 seeks to fix an issue with uploading coverage reports properly (conveyal/gtfs-lib#193).

[codecov-io]

Codecov Report

Merging #178 into dev will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##               dev    #178   +/-   ##
=======================================
  Coverage     5.15%   5.15%           
  Complexity      94      94           
=======================================
  Files          133     133           
  Lines         6929    6929           
  Branches       907     907           
=======================================
  Hits           357     357           
  Misses        6544    6544           
  Partials        28      28

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 32c2f9d...897abc5. Read the comment docs.

[landonreed]

🎉 This PR is included in version 3.3.1 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀