lint: Accept mentions of specific Python versions.
lint: Accept mentions of specific Python versions.

We're about to do this (a) in a number of places mentioning
system packages like `python3-dev` to install, and (b) in the
shebangs of every script in the tree.

brainwane/zulip,kou/zulip,amanharitsh123/zulip,timabbott/zulip,vaidap/zulip,hackerkid/zulip,punchagan/zulip,vaidap/zulip,showell/zulip,shubhamdhama/zulip,showell/zulip,hackerkid/zulip,showell/zulip,brainwane/zulip,vaidap/zulip,rht/zulip,amanharitsh123/zulip,brockwhittaker/zulip,jackrzhang/zulip,Galexrt/zulip,kou/zulip,jackrzhang/zulip,andersk/zulip,eeshangarg/zulip,timabbott/zulip,brockwhittaker/zulip,rishig/zulip,brainwane/zulip,kou/zulip,punchagan/zulip,timabbott/zulip,verma-varsha/zulip,dhcrzf/zulip,vaidap/zulip,mahim97/zulip,Galexrt/zulip,jackrzhang/zulip,zulip/zulip,tommyip/zulip,timabbott/zulip,brockwhittaker/zulip,andersk/zulip,eeshangarg/zulip,dhcrzf/zulip,dhcrzf/zulip,hackerkid/zulip,jackrzhang/zulip,dhcrzf/zulip,synicalsyntax/zulip,rht/zulip,mahim97/zulip,kou/zulip,shubhamdhama/zulip,punchagan/zulip,eeshangarg/zulip,eeshangarg/zulip,amanharitsh123/zulip,punchagan/zulip,jackrzhang/zulip,zulip/zulip,eeshangarg/zulip,timabbott/zulip,shubhamdhama/zulip,hackerkid/zulip,kou/zulip,synicalsyntax/zulip,andersk/zulip,timabbott/zulip,tommyip/zulip,brockwhittaker/zulip,Galexrt/zulip,jackrzhang/zulip,dhcrzf/zulip,Galexrt/zulip,synicalsyntax/zulip,dhcrzf/zulip,dhcrzf/zulip,tommyip/zulip,verma-varsha/zulip,punchagan/zulip,zulip/zulip,brockwhittaker/zulip,kou/zulip,amanharitsh123/zulip,kou/zulip,zulip/zulip,Galexrt/zulip,showell/zulip,andersk/zulip,tommyip/zulip,synicalsyntax/zulip,brainwane/zulip,andersk/zulip,rishig/zulip,mahim97/zulip,showell/zulip,rishig/zulip,mahim97/zulip,rht/zulip,rht/zulip,andersk/zulip,mahim97/zulip,synicalsyntax/zulip,verma-varsha/zulip,hackerkid/zulip,showell/zulip,rht/zulip,tommyip/zulip,zulip/zulip,brainwane/zulip,hackerkid/zulip,andersk/zulip,rht/zulip,amanharitsh123/zulip,brainwane/zulip,tommyip/zulip,synicalsyntax/zulip,brainwane/zulip,rht/zulip,rishig/zulip,timabbott/zulip,amanharitsh123/zulip,eeshangarg/zulip,mahim97/zulip,vaidap/zulip,zulip/zulip,shubhamdhama/zulip,rishig/zulip,brockwhittaker/zulip,punchagan/zulip,shubhamdhama/zulip,verma-varsha/zulip,showell/zulip,tommyip/zulip,vaidap/zulip,zulip/zulip,rishig/zulip,hackerkid/zulip,punchagan/zulip,synicalsyntax/zulip,Galexrt/zulip,verma-varsha/zulip,shubhamdhama/zulip,Galexrt/zulip,shubhamdhama/zulip,eeshangarg/zulip,rishig/zulip,jackrzhang/zulip,verma-varsha/zulip