Bump minimum Ruby version to 3.3

Author: vnovitskyi

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [3.0, 3.1, 3.2, 3.3, head]
+        ruby: [3.3, head]
     steps:
       - uses: actions/checkout@v4
       - name: Set up Ruby

Gemfile.lock

@@ -21,7 +21,7 @@ GEM
     nokogiri (1.16.3)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    parallel (2.1.0)
+    parallel (1.27.0)
     parser (3.3.11.1)
       ast (~> 2.4.1)
       racc

ofx.gemspec

@@ -24,7 +24,7 @@ Gem::Specification.new do |s|
   s.require_paths = ['lib']
   s.licenses      = ['MIT']
 
-  s.required_ruby_version = ">= 3.0.0"
+  s.required_ruby_version = ">= 3.3.0"
 
   s.add_dependency 'bigdecimal'
   s.add_dependency 'nkf'