Require Ruby 3.2+ and update CI to test only 3.2 and 3.3

Co-authored-by: nhorton <[email protected]>

Author: Copilot

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
       contents: read
     strategy:
       matrix:
-        ruby-version: ['3.0', '3.1', '3.2', '3.3']
+        ruby-version: ['3.2', '3.3']
 
     steps:
     - uses: actions/checkout@v4

source_control_cache_store.gemspec

@@ -10,7 +10,7 @@ Gem::Specification.new do |spec|
   spec.description   = "A Rails cache store that stores cache entries as files suitable for version control"
   spec.homepage      = "https://github.com/Unsupervisedcom/source_control_cache_store"
   spec.license       = "MIT"
-  spec.required_ruby_version = ">= 2.7.0"
+  spec.required_ruby_version = ">= 3.2.0"
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = spec.homepage