Merge pull request #222 from voxpupuli/dependabot/bundler/facterdb-gte-3.1-and-lt-5.0

FacterDB: Allow 4.x

Author: bastelfreak

rspec-puppet-facts.gemspec

@@ -27,5 +27,5 @@ Gem::Specification.new do |s|
 
   s.add_dependency 'deep_merge', '~> 1.2'
   s.add_dependency 'facter', '< 5'
-  s.add_dependency 'facterdb', '~> 3.1'
+  s.add_dependency 'facterdb', '>= 3.1', '< 5.0'
 end