Update simplecov requirement from ~> 0.10.0 to ~> 0.22.0 (#83)

Updates the requirements on [simplecov](https://github.com/simplecov-ruby/simplecov) to permit the latest version.
- [Release notes](https://github.com/simplecov-ruby/simplecov/releases)
- [Changelog](https://github.com/simplecov-ruby/simplecov/blob/main/CHANGELOG.md)
- [Commits](simplecov-ruby/simplecov@v0.10.0...v0.22.0)

---
updated-dependencies:
- dependency-name: simplecov
  dependency-type: direct:development
...

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trino-client.gemspec

@@ -26,6 +26,6 @@ Gem::Specification.new do |gem|
   gem.add_development_dependency "rspec", ["~> 2.13.0"]
   gem.add_development_dependency "webmock", ["~> 3.0"]
   gem.add_development_dependency "addressable", ["~> 2.4.0"] # 2.5.0 doesn't support Ruby 1.9.3
-  gem.add_development_dependency "simplecov", ["~> 0.10.0"]
+  gem.add_development_dependency "simplecov", "~> 0.22.0"
   gem.add_development_dependency "standard", "~> 1.12.1"
 end