ci: Drop Python 2.6 and 3.2 from build matrix
ci: Drop Python 2.6 and 3.2 from build matrix

- Python 2.6 has been EOL since 2013-10-29.
- Python 3.2 has been EOL since 2016-02-27.

JonathonReinhart/scuba,JonathonReinhart/scuba,JonathonReinhart/scuba