new: [odoo-tecnativa] change default image to last ``12.0``

The previous image is on a server that was shut down.

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

odoo-tecnativa/metadata.yml

@@ -1,4 +1,4 @@
-docker-image: git.panda-chi.io:5002/panda-chi/docker-odoo-pandachi:12.0
+docker-image: docker.0k.io/mirror/odoo:rc_12.0-MYC-INIT-3.7
 data-resources:
   - /var/lib/odoo
 # config-resources: