-show-cursor is deprecated in qemu

Noticed this warning on the CLI

$ pmbootstrap qemu
[20:43:35] Running postmarketOS in QEMU VM (x86_64)
[20:43:35] WARNING: package osk-sdl: aport version 0.60-r0 is lower than 0.60_p20201218191110-r0 from the binary repository. 0.60_p20201218191110-r0 will be used when installing osk-sdl. See also: <https://postmarketos.org/warning-repo2>
[20:43:35] (rootfs_qemu-amd64) install
[20:43:36] Setting the rootfs size to 4G
[20:43:36] Connect to the VM:
[20:43:36] * (ssh) ssh -p 2222 user@localhost
[20:43:36] * (serial) in this console (stdout/stdin)
qemu-system-x86_64: -show-cursor: warning: The -show-cursor option is deprecated. Please add show-cursor=on to your -display options.
qemu-system-x86_64: -show-cursor: warning: When using the default display you can use -display default,show-cursor=on
[    0.000000] 
...

Seems like this should be an easy fix in pmb.qemu.run.py.