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

@@ -33,7 +33,7 @@ jobs:
 
     # https://github.com/marketplace/actions/build-and-push-docker-images
     - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v4
+      uses: docker/setup-buildx-action@v3
 
     - name: Login to Docker Hub
       uses: docker/login-action@v4
@@ -42,7 +42,7 @@ jobs:
         password: ${{ secrets.DOCKER_TOKEN }}
 
     - name: Build and push Docker image for dyndnsd ${{ env.DYNDNSD_VERSION }}
-      uses: docker/build-push-action@v7
+      uses: docker/build-push-action@v6
       with:
         context: docker
         build-args: |

Rakefile

@@ -16,7 +16,7 @@ end
 hadolint_version = 'v2.14.0'
 
 # renovate: datasource=github-tags depName=aquasecurity/trivy
-trivy_version = 'v0.69.3'
+trivy_version = 'v0.68.2'
 
 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', '< 2.39'
   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'
@@ -44,7 +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', '~> 1.86.0'
+  s.add_development_dependency 'rubocop', '~> 1.85.0'
   s.add_development_dependency 'rubocop-rake', '~> 0.7.1'
   s.add_development_dependency 'rubocop-rspec', '~> 3.9.0'
   s.add_development_dependency 'solargraph', '~> 0.58.1'