Enable `pytest-cov[toml]` akin to upstream `coverage[toml]`
Enable `pytest-cov[toml]` akin to upstream `coverage[toml]`

https://github.com/nedbat/coveragepy/issues/664 (+ later fixes)

Signed-off-by: Stavros Ntentos <8159c87baccae9337be51e59f12af0b7b98a12af@users.noreply.github.com>

pytest-dev/pytest-cov