Upgrade development dependencies (#41)

All of the dev dependencies were super outdated and the tests wouldn't work.

lib/posthog/feature_flags.rb

@@ -229,7 +229,7 @@ def self.relative_date_parse_for_feature_flag_matching(value)
           # Guard against overflow, disallow numbers greater than 10_000
           return nil
         end
-        
+
         interval = match[2]
         if interval == "h"
           parsed_dt = parsed_dt - (number/24r)
@@ -254,7 +254,7 @@ def self.relative_date_parse_for_feature_flag_matching(value)
     def self.match_property(property, property_values)
       # only looks for matches where key exists in property_values
       # doesn't support operator is_not_set
-      
+
       PostHog::Utils.symbolize_keys! property
       PostHog::Utils.symbolize_keys! property_values
 
@@ -436,7 +436,7 @@ def is_condition_match(flag, distinct_id, condition, properties)
       if !rollout_percentage.nil? and _hash(flag[:key], distinct_id) > (rollout_percentage.to_f/100)
         return false
       end
-      
+
       return true
     end
 
@@ -531,6 +531,6 @@ def _request(uri, request_object)
         logger.debug("Unable to complete request to #{uri}")
         throw e
       end
-    end  
+    end
   end
 end

posthog-ruby.gemspec

@@ -14,19 +14,19 @@ Gem::Specification.new do |spec|
   spec.homepage = 'https://github.com/PostHog/posthog-ruby'
   spec.license = 'MIT'
   spec.required_ruby_version = '>= 2.0'
-  
+
   spec.add_dependency 'concurrent-ruby', '~> 1'
 
   # Used in the executable testing script
   spec.add_development_dependency 'commander', '~> 4.4'
 
   # Used in specs
-  spec.add_development_dependency 'rake', '~> 10.3'
-  spec.add_development_dependency 'rspec', '~> 3.0'
-  spec.add_development_dependency 'tzinfo', '1.2.1'
-  spec.add_development_dependency 'activesupport', '~> 4.1.11'
+  spec.add_development_dependency 'rake', '~> 13.1'
+  spec.add_development_dependency 'rspec', '~> 3.13'
+  spec.add_development_dependency 'tzinfo', '~> 2.0'
+  spec.add_development_dependency 'activesupport', '~> 7.1'
   if RUBY_VERSION >= '2.0' && RUBY_PLATFORM != 'java'
-    spec.add_development_dependency 'oj', '~> 3.6.2'
+    spec.add_development_dependency 'oj', '~> 3.16.3'
   end
   if RUBY_VERSION >= '2.1'
     spec.add_development_dependency 'rubocop', '~> 0.51.0'

spec/spec_helper.rb

@@ -7,7 +7,7 @@
 end
 
 require 'posthog'
-require 'active_support/time'
+require 'active_support/all'
 require 'webmock/rspec'
 
 # Setting timezone for ActiveSupport::TimeWithZone to UTC