UriTemplate can't recognize variable names that contain a dot

[alan-mann]

to reproduce:

//  work
UriTemplate.of("http://localhost:8201/{?integrations}").getVariableNames().size() // => 1 

// not work
UriTemplate.of("http://localhost:8201/{?integrations.not}").getVariableNames().size() // => 0

As a comparison, the ruby client sporkmonger/addressable parses variables correctly

require 'addressable'
Addressable::Template.new("http://localhost:8201/{?integrations.not}").variables # => ["integrations.not"]

below is a screenshot taken from the RFC(https://datatracker.ietf.org/doc/html/rfc6570#section-2.3):

[odrotbohm]

Fixed and backported to 1.5 and 1.4.

[alan-mann]

that's fast. thank you