[#65184950] Increase inotify max_user_instances

Increase the max instances of inotify per user, from the default of 128
to 1024.

Prevents `inotify cannot be used` errors when using `tail`.
Merge pull request #3 from alphagov/65184950-fix-inotify-watches

[#65184950] Increase inotify max_user_instances