Update pathspec requirement from >= 0.2.1, < 2.0.0 to >= 0.2.1, < 3.0.0

Updates the requirements on [pathspec](https://github.com/highb/pathspec-ruby) to permit the latest version.
- [Release notes](https://github.com/highb/pathspec-ruby/releases)
- [Changelog](https://github.com/highb/pathspec-ruby/blob/master/CHANGELOG.md)
- [Commits](highb/pathspec-ruby@0.2.1...1.1.3)

---
updated-dependencies:
- dependency-name: pathspec
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

puppet-modulebuilder.gemspec

@@ -25,7 +25,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
   # minitar and pathspec is required for building Puppet modules
   spec.add_runtime_dependency 'minitar', '~> 0.9'
-  spec.add_runtime_dependency 'pathspec', '>= 0.2.1', '< 2.0.0'
+  spec.add_runtime_dependency 'pathspec', '>= 0.2.1', '< 3.0.0'
 
   spec.add_development_dependency 'voxpupuli-rubocop', '~> 2.8.0'