Gemspec updates and Ruby update

[FlexonyoPizza]

Summary

• Ruby update to 3.3.6
• Nokogiri bumped to 1.19.1
• Rubocop bumped to 1.86
• addressable bumped to 2.9.0 (latest version)
• rack bumped to 3.2.6 (latest version)
• parallel regressed to 1.26.3 to match inferno-core and to be able to support ruby 3.2

No rubocop offenses detected locally after updating specs

[karlnaden]

add instructions for how you tested against inferno-core and test kits.

[karlnaden]

what gems needs this - can it go in the test/development group?

[FlexonyoPizza]

parallel is used by rubocop solely for dev/testing, it isnt used at runtime so yes we can definitely move it into the development & test group

[FlexonyoPizza]

Prereqs: You need to have a repo with the changes in this PR forked

1. Point fhir_client gem to your inferno-core fork
From your local inferno-core repo, in Gemfile, add a git source override right after "gemspec":

gem 'fhir_client', git: 'https://github.com/Username/fhir_models', branch: 'master'

then install: 'bundle install'

*if bundle install doesnt work, your inferno-core gemlock file may have gems locked to a previous resolution, in that case simply run: bundle update fhir_client

2. Run unit tests
'bundle exec rake spec'

3. Start inferno services and server
'bundle exec inferno services start'
'bundle exec inferno start'

4. Run all execution scripts
In a seperate terminal:
'bundle exec rake execute_scripts:run_all'