🐞 Fix gemspec

Why doesn't `gem` allow methods?

netbox-client-ruby.gemspec

@@ -1,56 +1,39 @@
 lib = File.expand_path('lib', __dir__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 
-def authors(spec)
+Gem::Specification.new do |spec|
+  spec.name          = 'netbox-client-ruby'
+  spec.version       = File.read(File.expand_path('VERSION', __dir__)).strip
+
+  spec.summary       = 'A read/write client for Netbox v2.'
+  spec.homepage      = 'https://github.com/ninech/netbox-client-ruby'
+  spec.license       = 'MIT'
+
   spec.authors       = ['Christian Mäder']
   spec.email         = ['[email protected]']
-end
 
-def files_and_paths(spec)
+  if spec.respond_to?(:metadata)
+    spec.metadata['allowed_push_host'] = 'https://rubygems.org'
+  end
+
   spec.files = `git ls-files -z`.split("\x0").reject do |f|
     f.match(%r{^(test|spec|features)/})
   end
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
-end
-
-def allowed_push_host(spec)
-  spec.metadata['allowed_push_host'] = 'https://rubygems.org'
-end
 
-def add_runtime_dependencies(spec)
   spec.add_runtime_dependency 'dry-configurable', '~> 0.1'
-  spec.add_runtime_dependency 'faraday', '>= 0.11.0'
+  spec.add_runtime_dependency 'faraday', '~> 0.11', '>= 0.11.0'
   spec.add_runtime_dependency 'faraday-detailed_logger', '~> 2.1'
   spec.add_runtime_dependency 'faraday_middleware', '~> 0.11.0'
-  spec.add_runtime_dependency 'ipaddress', '>= 0.8.3'
-  spec.add_runtime_dependency 'openssl', '>= 2.0.5'
-end
+  spec.add_runtime_dependency 'ipaddress', '~> 0.8', '>= 0.8.3'
+  spec.add_runtime_dependency 'openssl', '~> 2.0', '>= 2.0.5'
 
-def add_development_dependencies(spec)
   spec.add_development_dependency 'bundler', '~> 1.14'
   spec.add_development_dependency 'pry', '~> 0.10'
   spec.add_development_dependency 'rake', '~> 10.0'
   spec.add_development_dependency 'rspec', '~> 3.5'
   spec.add_development_dependency 'rubocop', '~> 0.48'
   spec.add_development_dependency 'rubocop-rspec', '~> 1.15'
 end
-
-Gem::Specification.new do |spec|
-  spec.name          = 'netbox-client-ruby'
-  spec.version       = File.read(File.expand_path('VERSION', __dir__)).strip
-
-  spec.summary       = 'A read/write client for Netbox v2.'
-  spec.homepage      = 'https://github.com/ninech/netbox-client-ruby'
-  spec.license       = 'MIT'
-
-  authors(spec)
-
-  allowed_push_host(spec) if spec.respond_to?(:metadata)
-
-  files_and_paths(spec)
-
-  add_runtime_dependencies(spec)
-  add_development_dependencies(spec)
-end