address warnings in rubocop and bump bundler version to resolve build errors

Author: jsonbailey

.rubocop.yml

@@ -1,4 +1,4 @@
-require:
+plugins:
   - rubocop-performance
 
 AllCops:
@@ -289,7 +289,7 @@ Style/PerlBackrefs:
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#no-perl-regexp-last-matchers'
   Enabled: false
 
-Naming/PredicateName:
+Naming/PredicatePrefix:
   Description: 'Check the names of predicate methods.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#bool-methods-qmark'
   ForbiddenPrefixes:

README.md

@@ -16,7 +16,7 @@ LaunchDarkly overview
 Supported Ruby versions
 -----------------------
 
-This version of the LaunchDarkly SDK has a minimum Ruby version of 2.5.0, or 9.2.0 for JRuby.
+This version of the LaunchDarkly SDK has a minimum Ruby version of 3.0.0, or 9.3.0 for JRuby.
 
 Getting started
 -----------

launchdarkly-server-sdk.gemspec

@@ -21,29 +21,29 @@ Gem::Specification.new do |spec|
   spec.required_ruby_version = ">= 3.0.0"
 
   spec.add_development_dependency "aws-sdk-dynamodb", "~> 1.57"
-  spec.add_development_dependency "rexml", "~> 3.3", ">= 3.3.7"
-  spec.add_development_dependency "bundler", "2.2.33"
-  spec.add_development_dependency "simplecov", "~> 0.21"
-  spec.add_development_dependency "rspec", "~> 3.10"
+  spec.add_development_dependency "bundler", "~> 2.5.0"
+  spec.add_development_dependency "connection_pool", "~> 2.3"
   spec.add_development_dependency "diplomat", "~> 2.6"
+  spec.add_development_dependency "listen", "~> 3.3" # see file_data_source.rb
   spec.add_development_dependency "redis", "~> 5.0"
-  spec.add_development_dependency "connection_pool", "~> 2.3"
+  spec.add_development_dependency "rexml", "~> 3.3", ">= 3.3.7"
+  spec.add_development_dependency "rspec", "~> 3.10"
   spec.add_development_dependency "rspec_junit_formatter", "~> 0.4"
-  spec.add_development_dependency "timecop", "~> 0.9"
-  spec.add_development_dependency "listen", "~> 3.3" # see file_data_source.rb
-  spec.add_development_dependency "webrick", "~> 1.7"
   spec.add_development_dependency "rubocop", "~> 1.37"
   spec.add_development_dependency "rubocop-performance", "~> 1.15"
+  spec.add_development_dependency "simplecov", "~> 0.21"
+  spec.add_development_dependency "timecop", "~> 0.9"
+  spec.add_development_dependency "webrick", "~> 1.7"
 
-#  spec.add_runtime_dependency "benchmark", "~> 0.4"
-  spec.add_runtime_dependency "semantic", "~> 1.6"
+  spec.add_runtime_dependency "benchmark", "~> 0.4"
   spec.add_runtime_dependency "concurrent-ruby", "~> 1.1"
   spec.add_runtime_dependency "ld-eventsource", "2.2.3"
   spec.add_runtime_dependency "observer", "~> 0.1.2"
+  spec.add_runtime_dependency "semantic", "~> 1.6"
   spec.add_runtime_dependency "zlib", "~> 3.1" unless RUBY_PLATFORM == "java"
   # Please keep ld-eventsource dependency as an exact version so that bugfixes to
   # that LD library are always associated with a new SDK version.
 
-  spec.add_runtime_dependency "json", "~> 2.3"
   spec.add_runtime_dependency "http", ">= 4.4.0", "< 6.0.0"
+  spec.add_runtime_dependency "json", "~> 2.3"
 end

spec/impl/repeating_task_spec.rb

@@ -38,7 +38,7 @@ def null_logger
           3.times do
             time = queue.pop
             unless last.nil?
-              expect(time.to_f - last.to_f).to be >=(0.05)
+              expect(time.to_f - last.to_f).to be >= 0.05
             end
             last = time
           end
@@ -50,7 +50,7 @@ def null_logger
         2.times do
           begin
             time = queue.pop(true)
-            expect(time.to_f).to be <=(stopped_time.to_f)
+            expect(time.to_f).to be <= stopped_time.to_f
           rescue ThreadError
             no_more_items = true
             break