gems: update async requirement from ~> 1.31.0 to >= 1.31, < 2.34

Updates the requirements on [async](https://github.com/socketry/async) to permit the latest version.
- [Release notes](https://github.com/socketry/async/releases)
- [Changelog](https://github.com/socketry/async/blob/main/releases.md)
- [Commits](https://github.com/socketry/async/compare/v1.31.0...v2.33.0)

---
updated-dependencies:
- dependency-name: async
  dependency-version: 2.33.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

CHANGELOG.md

@@ -1,13 +1,12 @@
 # Changelog
 
-## 3.11.0 (October 2nd, 2025)
+## 3.11.0
 
 IMPROVEMENTS:
 
 - add Ruby 3.4 support
-- update base of Docker image to Alpine 3.22.1 (from 3.19.0 before)
 
-## 3.10.0 (January 18th, 2024)
+## 3.10.0
 
 IMPROVEMENTS:
 

Rakefile

@@ -16,7 +16,7 @@ end
 hadolint_version = 'v2.14.0'
 
 # renovate: datasource=github-tags depName=aquasecurity/trivy
-trivy_version = 'v0.67.0'
+trivy_version = 'v0.61.0'
 
 namespace :docker do
   ci_image = 'cmur2/dyndnsd:ci'

dyndnsd.gemspec

@@ -27,7 +27,7 @@ Gem::Specification.new do |s|
 
   s.required_ruby_version = '>= 3.0'
 
-  s.add_dependency 'async', '~> 1.31.0'
+  s.add_dependency 'async', '>= 1.31', '< 2.34'
   s.add_dependency 'async-dns', '~> 1.3.0'
   s.add_dependency 'base64', '~> 0.2.0' # needed for async
   s.add_dependency 'logger', '>= 1.6', '< 1.8'
@@ -44,7 +44,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rack-test'
   s.add_development_dependency 'rake'
   s.add_development_dependency 'rspec'
-  s.add_development_dependency 'rubocop', '~> 1.81.1'
+  s.add_development_dependency 'rubocop', '~> 1.80.0'
   s.add_development_dependency 'rubocop-rake', '~> 0.7.1'
   s.add_development_dependency 'rubocop-rspec', '~> 3.7.0'
   s.add_development_dependency 'solargraph', '~> 0.55.0'

lib/dyndnsd/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Dyndnsd
-  VERSION = '3.11.0'
+  VERSION = '3.9.2'
 end