Update Ruby version requirements and modify CI configurations

Author: ydah

.github/workflows/test.yml

@@ -33,8 +33,6 @@ jobs:
         os:
           - ubuntu-latest
         ruby:
-          - "2.5"
-          - "2.6"
           - "2.7"
           - "3.0"
           - "3.1"
@@ -46,10 +44,6 @@ jobs:
           - gemfiles/standalone.gemfile
         experimental: [false]
         include:
-          - os: ubuntu-latest
-            ruby: "2.5"
-            gemfile: gemfiles/openssl.gemfile
-            experimental: false
           - os: ubuntu-latest
             ruby: "truffleruby-head"
             gemfile: "gemfiles/standalone.gemfile"

CHANGELOG.md

@@ -4,6 +4,10 @@
 
 [Full Changelog](https://github.com/jwt/ruby-jwt/compare/v3.1.2...v3.1.3)
 
+**Breaking changes:**
+- Drop support for Ruby 2.6 and older [#713](https://github.com/jwt/ruby-jwt/pull/713) ([@ydah](https://github.com/ydah))
+- Bump minimum json gem version to 2.6 [#713](https://github.com/jwt/ruby-jwt/pull/713) ([@ydah](https://github.com/ydah))
+
 **Features:**
 
 - Add duplicate claim name detection per RFC 7519 Section 4 [#713](https://github.com/jwt/ruby-jwt/pull/713) ([@ydah](https://github.com/ydah))

ruby-jwt.gemspec

@@ -15,7 +15,7 @@ Gem::Specification.new do |spec|
   spec.description = 'A pure ruby implementation of the RFC 7519 OAuth JSON Web Token (JWT) standard.'
   spec.homepage = 'https://github.com/jwt/ruby-jwt'
   spec.license = 'MIT'
-  spec.required_ruby_version = '>= 2.5'
+  spec.required_ruby_version = '>= 2.7'
   spec.metadata = {
     'bug_tracker_uri' => 'https://github.com/jwt/ruby-jwt/issues',
     'changelog_uri' => "https://github.com/jwt/ruby-jwt/blob/v#{JWT.gem_version}/CHANGELOG.md",