Cap Thor dependency at 1.2.2

Facter is a runtime dependency of Puppet. The Puppet 7 series uses Ruby
2.5 as its minimum Ruby version.

Thor is a runtime dependency of Facter. Thor dropped Ruby 2.5 support
with version 1.3.0.

This commits sets Facter's Gemspec to use Thor < 1.3.0.

ext/project_data.yaml

@@ -15,4 +15,4 @@ gem_default_executables: 'facter'
 gem_required_ruby_version: ['>= 2.5', '< 4.0']
 gem_runtime_dependencies:
   hocon: ~> 1.3
-  thor: ['>= 1.0.1', '< 2.0']
+  thor: ['>= 1.0.1', '< 1.3']

facter.gemspec

@@ -46,5 +46,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'yard', '~> 0.9'
 
   spec.add_runtime_dependency 'hocon', '~> 1.3'
-  spec.add_runtime_dependency 'thor', ['>= 1.0.1', '< 2.0']
+  spec.add_runtime_dependency 'thor', ['>= 1.0.1', '< 1.3'] # Thor 1.3.0 drops support for Ruby 2.5
 end