gh: Fix get-pr-number to work with > 100 open PRs
gh: Fix get-pr-number to work with > 100 open PRs

dumbbell/otp,bjorng/otp,erlang/otp,dgud/otp,bjorng/otp,vinoski/otp,erlang/otp,emacsmirror/erlang,vinoski/otp,dgud/otp,vinoski/otp,bjorng/otp,potatosalad/otp,dgud/otp,dumbbell/otp,dumbbell/otp,potatosalad/otp,dumbbell/otp,dgud/otp,dumbbell/otp,erlang/otp,potatosalad/otp,vinoski/otp,bjorng/otp,erlang/otp,erlang/otp,vinoski/otp,dumbbell/otp,vinoski/otp,dgud/otp,bjorng/otp,erlang/otp,vinoski/otp,bjorng/otp,bjorng/otp,dgud/otp,emacsmirror/erlang,potatosalad/otp,dgud/otp,emacsmirror/erlang,bjorng/otp,dgud/otp,erlang/otp,emacsmirror/erlang,potatosalad/otp,emacsmirror/erlang,vinoski/otp,vinoski/otp,emacsmirror/erlang,vinoski/otp,dgud/otp,emacsmirror/erlang,emacsmirror/erlang,bjorng/otp,dumbbell/otp,potatosalad/otp,potatosalad/otp,bjorng/otp,dumbbell/otp,erlang/otp,potatosalad/otp,dumbbell/otp,potatosalad/otp,erlang/otp,emacsmirror/erlang,dumbbell/otp,potatosalad/otp,emacsmirror/erlang,dgud/otp,erlang/otp