gems: update opentelemetry-sdk requirement from ~> 1.2.0 to >= 1.2, < 1.5

Updates the requirements on [opentelemetry-sdk](https://github.com/open-telemetry/opentelemetry-ruby) to permit the latest version.
- [Release notes](https://github.com/open-telemetry/opentelemetry-ruby/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-ruby/blob/main/sdk/CHANGELOG.md)
- [Commits](https://github.com/open-telemetry/opentelemetry-ruby/compare/opentelemetry-sdk/v1.2.0...opentelemetry-sdk/v1.2.1)

---
updated-dependencies:
- dependency-name: opentelemetry-sdk
  dependency-type: direct:production
...

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

.github/dependabot.yml

@@ -0,0 +1,13 @@
+---
+version: 2
+updates:
+  - package-ecosystem: "bundler"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    commit-message:
+      prefix: "gems"
+    labels: ["dependabot"]
+    open-pull-requests-limit: 10
+    pull-request-branch-name:
+      separator: "-"

.github/renovate.json5

@@ -15,6 +15,11 @@
   commitMessageTopic: "{{depName}}",
   commitMessageExtra: "to {{#if isSingleVersion}}v{{{newVersion}}}{{else}}{{{newValue}}}{{/if}}",
   packageRules: [
+    // Ruby dependencies are managed by depfu
+    {
+      matchManagers: ["bundler"],
+      enabled: false,
+    },
     // Commit message formats
     {
       matchDatasources: ["docker"],

README.md

@@ -1,6 +1,6 @@
 # dyndnsd.rb
 
-![ci](https://github.com/cmur2/dyndnsd/workflows/ci/badge.svg)
+![ci](https://github.com/cmur2/dyndnsd/workflows/ci/badge.svg) [![Dependencies](https://badges.depfu.com/badges/4f25da8493f7a29f652ac892fbf9227b/overview.svg)](https://depfu.com/github/cmur2/dyndnsd)
 
 A small, lightweight and extensible DynDNS server written with Ruby and Rack.
 

dyndnsd.gemspec

@@ -27,12 +27,12 @@ Gem::Specification.new do |s|
 
   s.required_ruby_version = '>= 3.0'
 
-  s.add_runtime_dependency 'async', '~> 2.11.0'
+  s.add_runtime_dependency 'async', '~> 1.31.0'
   s.add_runtime_dependency 'async-dns', '~> 1.3.0'
   s.add_runtime_dependency 'metriks'
   s.add_runtime_dependency 'opentelemetry-exporter-jaeger', '~> 0.22.0'
   s.add_runtime_dependency 'opentelemetry-instrumentation-rack', '~> 0.22.0'
-  s.add_runtime_dependency 'opentelemetry-sdk', '~> 1.2.0'
+  s.add_runtime_dependency 'opentelemetry-sdk', '>= 1.2', '< 1.5'
   s.add_runtime_dependency 'rack', '~> 3.0'
   s.add_runtime_dependency 'rackup', '~> 2'
   s.add_runtime_dependency 'webrick', '>= 1.6.1'