[PRISM] Enable newline test

.github/workflows/prism.yml

@@ -92,7 +92,7 @@ jobs:
         timeout-minutes: 40
         env:
           GNUMAKEFLAGS: ''
-          RUBY_TESTOPTS: '-q --tty=no --excludes-dir="../src/test/.excludes-prism" --exclude="error_highlight/test_error_highlight.rb" --exclude="prism/encoding_test.rb" --exclude="prism/newline_test.rb"'
+          RUBY_TESTOPTS: '-q --tty=no --excludes-dir="../src/test/.excludes-prism" --exclude="error_highlight/test_error_highlight.rb" --exclude="prism/encoding_test.rb"'
           RUN_OPTS: ${{ matrix.run_opts }}
 
       - name: make test-prism-spec

test/prism/newline_test.rb

@@ -7,7 +7,14 @@ return unless defined?(RubyVM::InstructionSequence)
 module Prism
   class NewlineTest < TestCase
     base = File.expand_path("../", __FILE__)
-    filepaths = Dir["*.rb", base: base] - %w[encoding_test.rb errors_test.rb parser_test.rb static_literals_test.rb unescape_test.rb]
+    filepaths = Dir["*.rb", base: base] - %w[
+      encoding_test.rb
+      errors_test.rb
+      parser_test.rb
+      regexp_test.rb
+      static_literals_test.rb
+      unescape_test.rb
+    ]
 
     filepaths.each do |relative|
       define_method("test_newline_flags_#{relative}") do