Fixes #36660 - drop value from settings dsl

also update plugin docs to use a seed instead of a migration if they
need a value

Fixes #36639 - Use Templates feature on IPv6

This now looks at, and prefers, the IPv6 subnet on the
provision_interface to determine the template proxy. This allows using
the Templates feature in pure IPv6 provisioning setups.

Fixes #36329: Read UI notification cache as JSON

Fixes #36536 - Update AutoYaST provisioning templates for SLES 15 SP5

Fixes #36644 - Validate root_url before using it

Refs #36537 - Drop description from setting search

The description is no longer a field so it can't be searched anymore. This is
not a real fix, but prevents internal server errors on the settings search.

Fixes: de56ffb28064

• ...and fix comment typos

Fixes #36393 - Do not rebuild managed hosts in registration

Refs #36219 - allow loading HashWithIndifferentAccess from YAML

Fixes: c9b82a573f64fe54e61d55f079adeb1df3d0cae8

Fixes #36219 - use YAML.safe_load instead of YAML.load

as explained in this rubocop rule https://www.rubydoc.info/gems/rubocop/RuboCop/Cop/Security/YAMLLoad