* parser/current: add -dev prefix to 3.4 branch (#1067)

Author: iliabylich

.github/workflows/test.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["3.1.6", "3.2.7", "3.3.7", "jruby-9.4"]
+        ruby: ["3.1.6", "3.2.7", "3.3.7", "3.4.1", "jruby-9.4"]
         test_command: ["bundle exec rake test"]
         include:
           - ruby: "head"
@@ -28,6 +28,8 @@ jobs:
             test_command: "./ci/run_rubocop_specs || true"
           - ruby: "3.3.7"
             test_command: "./ci/run_rubocop_specs || true"
+          - ruby: "3.4.1"
+            test_command: "./ci/run_rubocop_specs || true"
     steps:
     - uses: actions/checkout@v4
     - name: Install Ragel

lib/parser/current.rb

@@ -120,7 +120,7 @@ def warn_syntax_deviation(feature, version)
     CurrentRuby = Ruby33
 
   when /^3\.4\./
-    current_version = '3.4.0'
+    current_version = '3.4.0-dev'
     if RUBY_VERSION != current_version
       warn_syntax_deviation 'parser/ruby34', current_version
     end