Update dynamic DNS entries

Current versions

Formula history

ilovezfs Use “squiggly” heredocs.
Mike McQuaid ddclient: fix RuboCop warnings.
Mike McQuaid Use hash rockets again. (#5177)
Mike McQuaid Use Ruby 1.9+ symbol hash keys in all formulae. (#4942)
Viktor Szakats ddclient: use secure homepage
Xu Cheng ddclient: bottle unneeded
Alex Dunn ddclient 3.8.3
Nikolaus Wittenstein Add descriptions to all remaining homebrew packages
Saul Shanabrook ddclient: add HEAD
Jack Nagel Use doc helper where appropriate
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