Upgrade Ruby to version 3.3.6

* Drop support for Ruby 3.1

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [3.1, 3.2, 3.3]
+        ruby: [3.2, 3.3]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4

.ruby-version

@@ -1 +1 @@
-3.1.5
+3.3.6

CHANGELOG.md

@@ -1,3 +1,7 @@
+# Unreleased
+
+* Drop support for Ruby 3.1, keep supporting Ruby 3.2, use Ruby 3.3 as default https://github.com/alphagov/rails_translation_manager/pull/78 
+
 # 1.7.0
 
 * Drop support for Ruby 3.0

rails_translation_manager.gemspec

@@ -13,7 +13,7 @@ Gem::Specification.new do |spec|
   spec.homepage      = ""
   spec.license       = "MIT"
 
-  spec.required_ruby_version = ">= 3.1"
+  spec.required_ruby_version = ">= 3.2"
   spec.files         = `git ls-files -z`.split("\x0")
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})

test/rails_translation_manager/exporter_test.rb

@@ -95,7 +95,7 @@ def setup
 
       data = read_csv_data(exported_file("fr.csv"))
       assert_equal ["French", nil], data["language_names.fr"]
-      assert_equal nil, data["language_names.es"], "language key for spanish should not be present"
+      assert_nil data["language_names.es"], "language key for spanish should not be present"
     end
 
     test 'should export correct pluralization forms for target' do

test/rails_translation_manager/yaml_writer_test.rb

@@ -35,7 +35,7 @@ def teardown
 
       DummyWriter.new.write_yaml(output_file, data)
 
-      assert_match /\n$/, File.readlines(output_file).last
+      assert_match (/\n$/), File.readlines(output_file).last
     end
 
     test 'strips whitespace from the end of lines for consistency with code editors' do