Fix ruby (facebook#48721)

Summary:
Following the suggestions [here](https://stackoverflow.com/questions/79360526/uninitialized-constant-activesupportloggerthreadsafelevellogger-nameerror), it seems that concurrent-ruby has been released tonight and it is bugged. Let's pin it to the right version.

## Changelog:
[iOS][Changed] - Pin 'concurrent-ruby' to a working version

Pull Request resolved: facebook#48721

Test Plan: GHA

Reviewed By: robhogan

Differential Revision: D68262719

Pulled By: cipolleschi

fbshipit-source-id: fc6410e28cc96f9d3769d3082a77cac0a3efe6db

Gemfile

@@ -6,3 +6,4 @@ ruby ">= 2.6.10"
 gem 'cocoapods', '~> 1.13', '!= 1.15.0', '!= 1.15.1'
 gem 'activesupport', '>= 6.1.7.5', '< 7.1.0'
 gem 'xcodeproj', '< 1.26.0'
+gem 'concurrent-ruby', '< 1.3.4'

packages/helloworld/Gemfile

@@ -5,3 +5,4 @@ ruby ">= 2.6.10"
 gem 'cocoapods', '~> 1.13', '!= 1.15.0', '!= 1.15.1'
 gem 'activesupport', '>= 6.1.7.5', '< 7.1.0'
 gem 'xcodeproj', '< 1.26.0'
+gem 'concurrent-ruby', '< 1.3.4'

packages/rn-tester/Gemfile

@@ -9,3 +9,4 @@ gem 'cocoapods', '~> 1.13', '!= 1.15.0', '!= 1.15.1'
 gem 'rexml'
 gem 'activesupport', '>= 6.1.7.5', '< 7.1.0'
 gem 'xcodeproj', '< 1.26.0'
+gem 'concurrent-ruby', '< 1.3.4'