feat(pubsub): Upgrade to Ruby 3.2 minimum (#33944)

Co-authored-by: Yoshi Automation Bot <yoshi-automation@google.com>

Author: aandreassa

google-cloud-pubsub/Gemfile

@@ -28,7 +28,7 @@ gem "minitest-autotest", "~> 1.1"
 gem "minitest-focus", "~> 1.4"
 gem "minitest-reporters", "~> 1.7.0", require: false
 gem "minitest-rg", "~> 5.3"
-gem "ostruct", "~> 0.6"
+gem "ostruct", "~> 0.6.3"
 gem "pry", "~> 0.15.2"
 gem "rake"
 gem "redcarpet", "~> 3.6.1"

google-cloud-pubsub/README.md

@@ -131,7 +131,7 @@ If the logger's `progname` is not set to `"pubsub"`, these debug logs will be su
 
 ## Supported Ruby Versions
 
-This library is supported on Ruby 3.1+.
+This library is supported on Ruby 3.2+.
 
 Google provides official support for Ruby versions that are actively supported
 by Ruby Core—that is, Ruby versions that are either in normal maintenance or in

google-cloud-pubsub/google-cloud-pubsub.gemspec

@@ -16,7 +16,7 @@ Gem::Specification.new do |gem|
                        "TROUBLESHOOTING.md", "CHANGELOG.md", "CODE_OF_CONDUCT.md", "LICENSE", ".yardopts"]
   gem.require_paths = ["lib"]
 
-  gem.required_ruby_version = ">= 3.1"
+  gem.required_ruby_version = ">= 3.2"
 
   gem.add_dependency "concurrent-ruby", "~> 1.3"
   gem.add_dependency "google-cloud-core", "~> 1.8"