Log Message:
py-test4: updated to 4.6.11

pytest 4.6.11 (2020-06-04)
==========================

Bug Fixes
---------

- Fix summary entries appearing twice when ``f/F`` and ``s/S`` report chars were \ 
used at the same time in the ``-r`` command-line option (for example ``-rFf``).

  The upper case variants were never documented and the preferred form should be \ 
the lower case.

- Fix ``UnboundLocalError: local variable 'letter' referenced before
  assignment`` in ``_pytest.terminal.pytest_report_teststatus()``
  when plugins return report objects in an unconventional state.

  This was making ``pytest_report_teststatus()`` skip
  entering if-block branches that declare the ``letter`` variable.

  The fix was to set the initial value of the ``letter`` before
  the if-block cascade so that it always has a value.