chore: update puppet-bind repo url (#452)

changing this to `git.unkin.net` as that certificate is publicly
trusted, requiring no certificate changes for r10k docker container

Reviewed-on: #452

Puppetfile

@@ -66,5 +66,5 @@ mod 'thias-sysctl', '1.0.8'
 mod 'cirrax-dovecot', '1.3.3'
 
 mod 'bind',
-  :git => 'https://git.service.au-syd1.consul/unkinben/puppet-bind.git',
+  :git => 'https://git.unkin.net/unkinben/puppet-bind.git',
   :tag => '1.0'