Fixup ruby warnings

[ojab]

…/configuration/service_provider_dsl.rb:67: warning: `&' interpreted as argument prefix
…/pact_uri.rb:6: warning: parentheses after method name is interpreted as an argument list, not a decomposed argument
…/configuration/message_provider_dsl.rb:49: warning: `&' interpreted as argument prefix
…/state/provider_state.rb:15: warning: `&' interpreted as argument prefix
…/state/provider_state.rb:19: warning: `&' interpreted as argument prefix
…/state/provider_state.rb:63: warning: assigned but unused variable - fullname
…/state/provider_state.rb:84: warning: `&' interpreted as argument prefix
…/state/provider_state.rb:88: warning: `&' interpreted as argument prefix

[ojab]

First-time contributors need a maintainer to approve running workflows.

bundle exec rspec is green locally, sending to review.

[bethesque]

Thanks!