Update python
Update python

Changes:

- https://github.com/docker-library/python/commit/21d2ab0: Update to 3.8.2, pip 20.0.2

31z4/official-images,neo-technology/docker-official-images,infosiftr/stackbrew,dinogun/official-images,docker-solr/official-images,docker-library/official-images,docker-library/official-images,docker-library/official-images,docker-solr/official-images,docker-library/official-images,neo-technology/docker-official-images,dinogun/official-images,docker-library/official-images,dinogun/official-images,neo-technology/docker-official-images,docker-library/official-images,thresheek/official-images,thresheek/official-images,thresheek/official-images,dinogun/official-images,31z4/official-images,31z4/official-images,thresheek/official-images,dinogun/official-images,dinogun/official-images,docker-solr/official-images,docker-library/official-images,infosiftr/stackbrew,docker-library/official-images,neo-technology/docker-official-images,docker-library/official-images,docker-library/official-images,31z4/official-images,neo-technology/docker-official-images,docker-solr/official-images,dinogun/official-images,infosiftr/stackbrew,31z4/official-images,31z4/official-images,infosiftr/stackbrew,neo-technology/docker-official-images,thresheek/official-images,31z4/official-images,docker-solr/official-images,docker-library/official-images,neo-technology/docker-official-images,infosiftr/stackbrew,docker-library/official-images,infosiftr/stackbrew,docker-solr/official-images,dinogun/official-images,docker-solr/official-images,thresheek/official-images,31z4/official-images,neo-technology/docker-official-images,31z4/official-images,infosiftr/stackbrew,neo-technology/docker-official-images,docker-solr/official-images,31z4/official-images,infosiftr/stackbrew,infosiftr/stackbrew,neo-technology/docker-official-images,thresheek/official-images,dinogun/official-images,31z4/official-images,thresheek/official-images,thresheek/official-images,neo-technology/docker-official-images,docker-library/official-images,thresheek/official-images,infosiftr/stackbrew,31z4/official-images,31z4/official-images,docker-solr/official-images,docker-solr/official-images,thresheek/official-images,infosiftr/stackbrew,infosiftr/stackbrew,docker-solr/official-images,thresheek/official-images,dinogun/official-images,infosiftr/stackbrew,docker-solr/official-images,docker-solr/official-images,docker-library/official-images,thresheek/official-images,docker-solr/official-images,neo-technology/docker-official-images,31z4/official-images,neo-technology/docker-official-images,dinogun/official-images,infosiftr/stackbrew,dinogun/official-images,thresheek/official-images,dinogun/official-images,neo-technology/docker-official-images