Archlinux: allow taskopen with task-dev
I want to use task version 2.6, which is made available by the arch linux aur package task-dev.

```console
$ yay -Qs task
local/task-dev 2.6.0-1
    A command-line todo list manager

$ task --version
2.6.0

$ yay -S taskopen
:: Checking for conflicts...
:: Checking for inner conflicts...

==> Package conflicts found:
 -> Installing task will remove: task-dev (task)

==> Conflicting packages will have to be confirmed manually

[Repo: 2]  perl-json-2.97001-1  task-2.5.1-2
[Aur: 1]  taskopen-1.1.4-1
```

But taskopen wants to install task-2.5, which conflicts with task-dev.
The [PKGBUILD](https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=taskopen) only asks for `task>=2.4.0`, so this issue is strange.