Update ruby-prof requirement from ~> 0.17 to ~> 1.6

Updates the requirements on [ruby-prof](https://github.com/ruby-prof/ruby-prof) to permit the latest version.
- [Changelog](https://github.com/ruby-prof/ruby-prof/blob/master/CHANGES)
- [Commits](ruby-prof/ruby-prof@v0.17.0...1.6.3)

---
updated-dependencies:
- dependency-name: ruby-prof
  dependency-type: direct:development
...

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

signalwire.gemspec

@@ -31,7 +31,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rdoc', '~> 6.1'
   spec.add_development_dependency 'rspec', '~> 3.0'
   spec.add_development_dependency 'rubocop', '~> 0.67'
-  spec.add_development_dependency 'ruby-prof', '~> 0.17'
+  spec.add_development_dependency 'ruby-prof', '~> 1.6'
   spec.add_development_dependency 'simplecov', '~> 0.16'
   spec.add_development_dependency 'vcr', '~> 5.0'
   spec.add_development_dependency 'webmock', '~> 3.5'