Update pry-doc requirement from ~> 1.1.0 to ~> 1.5.0

Updates the requirements on [pry-doc](https://github.com/pry/pry-doc) to permit the latest version.
- [Changelog](https://github.com/pry/pry-doc/blob/master/CHANGELOG.md)
- [Commits](pry/pry-doc@v1.1.0...v1.5.0)

---
updated-dependencies:
- dependency-name: pry-doc
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

nose.gemspec

@@ -40,7 +40,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'fakefs', '~> 2.5.0'
   s.add_development_dependency 'memory_profiler', '~> 1.0.0'
   s.add_development_dependency 'pry-byebug', '~> 3.9.0'
-  s.add_development_dependency 'pry-doc', '~> 1.1.0'
+  s.add_development_dependency 'pry-doc', '~> 1.5.0'
   s.add_development_dependency 'pry-stack_explorer', '~> 0.5.1'
   s.add_development_dependency 'ronn', '~> 0.7.3'
   s.add_development_dependency 'rspec', '~> 3.10.0'