Codecov report combining

[dgasmith]

At the moment, Codecov reports are not correctly merging resulting in a lower coverage status than is truly available. Unsure why this is as all reports are uploaded correctly, it looks like only the first report is correctly merged.

A small hunch is that the git SHA is not correctly being uploaded from all reports.

[loriab]

looks like a GH actions consequence. weren't you seeing a problem with GHA and SHAs in another repo? or was that azure?

[dgasmith]

Yes, absolutely a GHA consequence. Travis is a "trusted" CI provider for Codecov so it automatically takes care of a number of issues.

From Codecov FAQ:

The upload token is required for all uploads, except originating from public project using Travis-CI, Circle CI, or AppVeyor CI.

See a PR that could fix this here. From this I derive that we may need to (potentially) upload additional data, but isn't commented on here.

[loriab]

After #180, codecov has returned to pre-GHA levels, so I think this is resolved. Please reopen if more services communications trouble suspected.