vendor: github.com/distribution/reference v0.6.0

[thaJeztah]

full diff: https://github.com/distribution/reference/compare/v0.5.0...v0.6.0

• remove deprecated SplitHostname
• refactor splitDockerDomain to include more documentation
• fix typo in readme
• Exclude domain from name length check

- A picture of a cute animal (not mandatory but encouraged)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 61.35%. Comparing base (2883637) to head (d11fbda).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #5133 +/- ## ========================================== - Coverage 61.37% 61.35% -0.03% ========================================== Files 298 295 -3 Lines 20722 20717 -5 ========================================== - Hits 12718 12710 -8 - Misses 7103 7104 +1 - Partials 901 903 +2 ```