Increase Dom0 size by running the following in Dom0 terminal:
sudo lvresize --size 50G /dev/mapper/qubes_dom0-root
sudo resize2fs /dev/mapper/qubes_dom0-root
Then run:
qvm-template install --enablerepo=qubes-templates-community-testing kali
Then check how to update the keyring, so you can update Kali. See:
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