actions: Rename all_subs_by_stream to all_subscribers_by_stream.
actions: Rename all_subs_by_stream to all_subscribers_by_stream.

The previous name sounded a bit too much like they were subcription
objects.

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