Handle IPv6 case

[tvdijen]

From the specifications paragraph 3.1.2.1:

"[..] Also, if the Client is a native application, it MAY use the http scheme with localhost or the IP loopback literals 127.0.0.1 or [::1] as the hostname."

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 89.89%. Comparing base (1276890) to head (356d6a0).
⚠️ Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
.../src/main/java/oidc/model/ProvidedRedirectURI.java	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #302      +/-   ##
============================================
- Coverage     89.93%   89.89%   -0.05%     
  Complexity      663      663              
============================================
  Files            86       86              
  Lines          2414     2414              
  Branches        274      274              
============================================
- Hits           2171     2170       -1     
  Misses          129      129              
- Partials        114      115       +1     

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[oharsta]

Merged in 4042fcd