Update python-coverage to version 5.3.1 / rev 43 via SR 857108
    
    https://build.opensuse.org/request/show/857108
    by user dirkmueller + dimstar_suse
    - update to 5.3.1:
      - When using ``--source`` on a large source tree, v5.x was slower than previous
        versions.  This performance regression is now fixed, closing `issue 1037`_.
      - Mysterious SQLite errors can happen on PyPy, as reported in `issue 1010`_. An
        immediate retry seems to fix the problem, although it is an unsatisfying
        solution.
      - The HTML report now saves the sort order in a more widely supported way,
        fixing `issue 986`_.  Thanks, Sebastián Ramírez (`pull request 1066`_).
      - The HTML report pages now have a :ref:`Sleepy Snake <sleepy>` favicon.
      - Wheels are now provided for manylinux2010, and for PyPy3 (pp36 and pp37).