modulesync 5.3.0

The default origins for "LinuxMint" do not pass validation
(`Unattended_upgrades::Origin` type), and cause an error:

```
Error while evaluating a Function Call, Class[Unattended_upgrades]: parameter 'origins' index 0 expects a match for Unattended_upgrades::Origin = Pattern[/^(origin|codename|label|site|suite|component|archive|[oalcn])=[^,]+(,(origin|codename|label|site|suite|component|archive|[oalcn])=[^,]+)*/], got '${distro_id}:${distro_codename}-security'
```

This change tweaks the origin line to pass validation.

Co-authored-by: Ewoud Kohl van Wijngaarden <ewoud@kohlvanwijngaarden.nl>

Fix default LinuxMint origins so they pass validation

Add allow_downgrade option to unattended-upgrades.erb

Fix broken Apache-2 license

* Update README.md

Add example for the origins parameter.

* Update README.md

Co-authored-by: Ewoud Kohl van Wijngaarden <ewoud@kohlvanwijngaarden.nl>

* Update README.md

* Update README.md

---------

Co-authored-by: Kenyon Ralph <kenyon@kenyonralph.com>
Co-authored-by: Ewoud Kohl van Wijngaarden <ewoud@kohlvanwijngaarden.nl>

modulesync 5.5.0

Drop Puppet 6 support

modulesync 6.0.0

puppetlabs/stdlib: Allow 9.x

Add ubuntu 22.04 support

Release 8.0.0