Require Ruby >= 3.3 and update CI Ruby versions

Author: dduugg

.github/workflows/build.yml

@@ -8,7 +8,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby:
-          - 3.2
           - 3.3
           - 3.4
           - 4.0

.rubocop.yml

@@ -1,5 +1,5 @@
 AllCops:
-  TargetRubyVersion: 3.2
+  TargetRubyVersion: 3.3
 
 require:
   - standard

singed.gemspec

@@ -8,7 +8,7 @@ Gem::Specification.new do |spec|
   spec.authors = ["Josh Nichols"]
   spec.email = ["josh.nichols@gusto.com"]
   spec.summary = "Quick and easy way to get flamegraphs from a specific part of your code base"
-  spec.required_ruby_version = ">= 3.2.0"
+  spec.required_ruby_version = ">= 3.3"
   spec.homepage = "https://github.com/rubyatscale/singed"
   spec.metadata = {
     "source_code_uri" => "https://github.com/rubyatscale/singed",