Disable deprecation warning by the default [Feature #16345]

And `-w` option turns it on.

1 files changed, 1 insertions, 1 deletions

diff --git a/spec/ruby/library/net/http/HTTPServerException_spec.rb b/spec/ruby/library/net/http/HTTPServerException_spec.rb
index 87841ab499..6800c625f7 100644
--- a/spec/ruby/library/net/http/HTTPServerException_spec.rb
+++ b/spec/ruby/library/net/http/HTTPServerException_spec.rb
@@ -13,7 +13,7 @@ ruby_version_is ""..."2.6" do
   end
 end
 
-ruby_version_is "2.6" do
+ruby_version_is "2.6"..."3.0" do
   describe "Net::HTTPServerException" do
     it "is a subclass of Net::ProtoServerError and is warned as deprecated" do
       -> { Net::HTTPServerException.should < Net::ProtoServerError }.should complain(/warning: constant Net::HTTPServerException is deprecated/)