xmlpool: update translation po files

xmlpool: update translation po files

These files are close to 4 years out of date; a lot's changed since.
Let's just check in a recently-regenerated version.

Changes generated by running `ninja xmlpool-{pot,update-po,gmo}`.

Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
Acked-by: Emil Velikov <emil.velikov@collabora.com>