mypy: Use Python 3 type syntax in gitlab/tests.py
mypy: Use Python 3 type syntax in gitlab/tests.py

tommyip/zulip,rht/zulip,timabbott/zulip,eeshangarg/zulip,dhcrzf/zulip,showell/zulip,rht/zulip,zulip/zulip,kou/zulip,jackrzhang/zulip,showell/zulip,rishig/zulip,jackrzhang/zulip,shubhamdhama/zulip,shubhamdhama/zulip,punchagan/zulip,hackerkid/zulip,jackrzhang/zulip,timabbott/zulip,synicalsyntax/zulip,showell/zulip,brainwane/zulip,andersk/zulip,kou/zulip,timabbott/zulip,zulip/zulip,hackerkid/zulip,andersk/zulip,brainwane/zulip,andersk/zulip,rishig/zulip,kou/zulip,hackerkid/zulip,jackrzhang/zulip,eeshangarg/zulip,eeshangarg/zulip,andersk/zulip,zulip/zulip,dhcrzf/zulip,tommyip/zulip,eeshangarg/zulip,mahim97/zulip,zulip/zulip,synicalsyntax/zulip,tommyip/zulip,kou/zulip,synicalsyntax/zulip,brainwane/zulip,mahim97/zulip,shubhamdhama/zulip,rht/zulip,punchagan/zulip,synicalsyntax/zulip,rishig/zulip,dhcrzf/zulip,mahim97/zulip,punchagan/zulip,tommyip/zulip,kou/zulip,tommyip/zulip,dhcrzf/zulip,brainwane/zulip,shubhamdhama/zulip,shubhamdhama/zulip,punchagan/zulip,eeshangarg/zulip,jackrzhang/zulip,eeshangarg/zulip,timabbott/zulip,andersk/zulip,brainwane/zulip,punchagan/zulip,showell/zulip,shubhamdhama/zulip,synicalsyntax/zulip,synicalsyntax/zulip,rishig/zulip,rishig/zulip,timabbott/zulip,punchagan/zulip,zulip/zulip,andersk/zulip,tommyip/zulip,jackrzhang/zulip,rht/zulip,hackerkid/zulip,hackerkid/zulip,brainwane/zulip,zulip/zulip,rht/zulip,dhcrzf/zulip,synicalsyntax/zulip,mahim97/zulip,hackerkid/zulip,shubhamdhama/zulip,timabbott/zulip,mahim97/zulip,mahim97/zulip,showell/zulip,rht/zulip,showell/zulip,tommyip/zulip,kou/zulip,andersk/zulip,timabbott/zulip,rishig/zulip,rht/zulip,dhcrzf/zulip,jackrzhang/zulip,brainwane/zulip,hackerkid/zulip,punchagan/zulip,rishig/zulip,showell/zulip,zulip/zulip,eeshangarg/zulip,dhcrzf/zulip,kou/zulip