Ruby 3 support

[thisismydesign]

I got the following issue after upgrading to Ruby 3:

ArgumentError (wrong number of arguments (given 4, expected 2..3))

google-cloud-storage only added support for Ruby 3 in 1.31.0. In the gemspec ~> 1.18 is defined, but in the last release it's still ~> 1.18.2 and I cannot update.

Could you release the current master and possibly bump google-cloud-storage?

[johannlejeune]

@mshibuya I can see some commits on the main branch regarding Ruby 3 compatibility and I was able to confirm that it fixes the Ruby 3 compatibilty.
Can you push a new release so we can avoid referencing the main branch in our Gemfiles ?
Thank you for maintaining this gem ❤️