Update debian/ changelog, control, rules and patches
- version 3.1.3~gh-1~~swh1: 3.1.3~gh is upstream version 3.1.3 from github instead of the version from pypi.org since this later lacks tests in
the source package,
- update dependency on python3-mirakuru,
- adapt patches to latest upstream,
- hack locales to make tests happy,
- ignore docker related tests,
- ignore test_postgres_options_plugin.py because they fail for some reason I cannot undestand,
- make tests use the installed version of pg_ctl.