Compatibility with pytest v.6 and higher

[ShamansCoding]

Greetings! Is there any active road map to add compatibility with latest pytest version, which major number at the moment is 6?

Poetry can't resolve the current pytest-sanic with the latest pytest:

Updating dependencies
Resolving dependencies... (0.5s)

[SolverProblemError]
Because pytest-sanic (1.6.1) depends on pytest (>=5.2,<6.0)
 and no versions of pytest-sanic match >1.6.1,<2.0.0, pytest-sanic (>=1.6.1,<2.0.0) requires pytest (>=5.2,<6.0).
So, because back depends on both pytest-sanic (^1.6.1) and pytest (^6.0.1), version solving failed.

[fabaff]

This makes also the package from Fedora Package Collection uninstallable.

[thamenato]

@ShamansCoding my PR was merged. I tested locally and seems to be working now, would you mind giving it a try on new version 1.6.2? Thanks

[ShamansCoding]

@thamenato
I checked my test suites. Everything seems to be working properly. Thank you!