src/meta-openembedded:python3-pytest-subtests: upgrade 0.5.0 -> 0.6.0

0.6.0 (2022-01-15)
* pytest>=6.0 is now required.
* Added official support for Python 3.10.
* Dropped support for Python 3.5.
* Users no longer need to configure a warnings filter for the internal A private pytest class or function was used pytest warning (#52).
* Experimental: Use SUBPASS and , for passed subtests instead of general PASSED, SUBFAIL and u for failed ones instead of FAILED (#30).

References:
pytest-dev/pytest-subtests#52
pytest-dev/pytest-subtests#30

Signed-off-by: Tim Orling <[email protected]>
Signed-off-by: Khem Raj <[email protected]>
Signed-off-by: Trevor Gamblin <[email protected]>