Bump required Ruby version to 3.2

Remove Ruby 3.1, 3.0, 2.7, 2.6, and 2.5 from CI test matrices.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: yahonda

.github/workflows/test.yml

@@ -16,11 +16,6 @@ jobs:
           '3.4',
           '3.3',
           '3.2',
-          '3.1',
-          '3.0',
-          '2.7',
-          '2.6',
-          '2.5',
           ruby-head,
           ruby-debug,
           truffleruby,

.github/workflows/test_11g.yml

@@ -16,11 +16,6 @@ jobs:
           '3.4',
           '3.3',
           '3.2',
-          '3.1',
-          '3.0',
-          '2.7',
-          '2.6',
-          '2.5',
           ruby-head,
           ruby-debug,
           truffleruby,

ruby-plsql.gemspec

@@ -10,6 +10,7 @@ Gem::Specification.new do |s|
   s.version = "0.8.0"
 
   s.required_rubygems_version = Gem::Requirement.new(">= 0".freeze) if s.respond_to? :required_rubygems_version=
+  s.required_ruby_version = ">= 3.2"
   s.require_paths = ["lib".freeze]
   s.authors = ["Raimonds Simanovskis".freeze]
   s.date = "2018-09-03"