Polish recent specs changes

Author: andrykonchin

spec/ruby/core/encoding/replicate_spec.rb

@@ -73,9 +73,7 @@
         Encoding::US_ASCII.replicate('MY-US-ASCII')
       }.should complain(/warning: Encoding#replicate is deprecated and will be removed in Ruby 3.3; use the original encoding instead/)
     end
-  end
 
-  ruby_version_is "3.2"..."3.3" do
     it "raises EncodingError if too many encodings" do
       code = '1_000.times {|i| Encoding::US_ASCII.replicate("R_#{i}") }'
       ruby_exe(code, args: "2>&1", exit_status: 1).should.include?('too many encoding (> 256) (EncodingError)')

spec/ruby/optional/capi/encoding_spec.rb

@@ -738,7 +738,7 @@
       it "raises EncodingError if too many encodings" do
         code = <<-RUBY
           require #{extension_path.dump}
-          1_000.times {|i| CApiEncodingSpecs.new.rb_define_dummy_encoding(\"R_\#{i}\") }
+          1_000.times {|i| CApiEncodingSpecs.new.rb_define_dummy_encoding("R_\#{i}") }
         RUBY
         ruby_exe(code, args: "2>&1", exit_status: 1).should.include?('too many encoding (> 256) (EncodingError)')
       end