From what I can tell https://codecov.io/env does not support GitHub Actions yet. Hopefully this will be a quick fix. I added the following to a local file and it said GitHubAction detected
at least.
elif [ "$CI" = "true" ] && [ "$GITHUB_ACTIONS" != "" ];
then
add "GITHUB_ACTION"
add "GITHUB_WORKFLOW"
add "GITHUB_RUN_ID"
add "GITHUB_RUN_NUMBER"
add "GITHUB_ACTION"
add "GITHUB_ACTIONS"
add "GITHUB_ACTOR"
add "GITHUB_REPOSITORY"
add "GITHUB_EVENT_NAME"
add "GITHUB_EVENT_PATH"
add "GITHUB_WORKSPACE"
add "GITHUB_SHA"
add "GITHUB_REF"
add "GITHUB_HEAD_REF"
add "GITHUB_BASE_REF"
Cheers,
-kyle