Action expects `lcov` to be run in `runner` environment/file system.

If unit-tests and lcov are run inside a container, they end up with a path like, /github/workspace/src/SourceFile.cpp.
However, if the unit-tests and lcov are executed using the run: tag (natively in the runner), they have a path like, /home/runner/work/<repo>/<repo>/src/SourceFile.cpp.

I was unable to discover an option that could be passed to lcov to satisfy the Coveralls GitHub action requirement. I was able to introduce a workflow step to workaround this issue (shown below), but my goal would be to remove this step in favor of an updated Coveralls acton.

- name: Coveralls Action Bug Workaround
  id: coveralls_bug_workaround
  run: sudo sed -i 's/github\/workspace/home\/runner\/work\/<repo>\/<repo>/g' ./coverage/lcov.info

My expectation is that the Coveralls GitHub action would be compatible with tests executed in both native and docker actions.

Start by reproducing the workflow with lcov run inside a container and natively via the runner, using the paths shown in the issue. Inspect the action's handling of coverage paths and compare both environments. Done means the action accepts both path formats without the sed workaround.