gems: update async requirement from ~> 1.31.0 to >= 1.31, < 2.39

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...v2.38.0)

---
updated-dependencies:
- dependency-name: async
  dependency-version: 2.38.0
  dependency-type: direct:production
...

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

.github/workflows/cd.yml

@@ -36,7 +36,7 @@ jobs:
       uses: docker/setup-buildx-action@v3
 
     - name: Login to Docker Hub
-      uses: docker/login-action@v3
+      uses: docker/login-action@v4
       with:
         username: cmur2
         password: ${{ secrets.DOCKER_TOKEN }}

.github/workflows/ci.yml

@@ -19,9 +19,9 @@ jobs:
       matrix:
         ruby-version:
         - '3.1'
-        - '3.2'
         - '3.3'
         - '3.4'
+        - '4.0'
     steps:
     - uses: actions/checkout@v6
     - name: Set up Ruby ${{ matrix.ruby-version }}

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## 3.13.0
+
+IMPROVEMENTS:
+
+- add Ruby 4.0 support
+
 ## 3.12.0 (December 4th, 2025)
 
 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 = 'v0.68.2'
 
 namespace :docker do
   ci_image = 'cmur2/dyndnsd:ci'
@@ -69,7 +69,7 @@ end
 namespace :bundle do
   desc 'Check for vulnerabilities with bundler-audit'
   task :audit do
-    sh 'bundler-audit check --ignore GHSA-vvfq-8hwr-qm4m' if !RUBY_VERSION.start_with?('3.0')
+    sh 'bundler-audit check --ignore GHSA-vvfq-8hwr-qm4m --ignore GHSA-wx95-c6cv-8532' if !RUBY_VERSION.start_with?('3.0')
   end
 end
 

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', '< 2.39'
   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'
@@ -44,8 +44,8 @@ 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', '~> 1.85.0'
   s.add_development_dependency 'rubocop-rake', '~> 0.7.1'
-  s.add_development_dependency 'rubocop-rspec', '~> 3.8.0'
-  s.add_development_dependency 'solargraph', '~> 0.55.0'
+  s.add_development_dependency 'rubocop-rspec', '~> 3.9.0'
+  s.add_development_dependency 'solargraph', '~> 0.58.1'
 end