net/ruby-netaddr: update to 2.0.5

2.0.5 (2021-10-07)

No release note and here are quote from commit logs:

* Add support for ipv4-embedded ipv6.
* Add support for additional prefix lengths for ipv4().
* Fix IPv6 zero compression.  Per rfc5952 section-4.2.2, do not compress a
  single zero field.  Credit to https://github.com/sftim for pointing this
  out.
* Fix bug with fill() methods.

(taca)