Remove support for old Ruby

.github/workflows/psl-update.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "3.1"
+          ruby-version: "3.3"
           bundler-cache: true
 
       - name: Update PSL

.github/workflows/tests.yml

@@ -10,8 +10,6 @@ jobs:
     strategy:
       matrix:
         ruby-version:
-          - "2.6"
-          - "2.7"
           - "3.0"
           - "3.1"
           - "3.2"

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 This project uses [Semantic Versioning 2.0.0](https://semver.org/).
 
+## main
+
+### Changed
+
+- Updated definitions.
+- Minimum Ruby version is 3.0
+
+
 ## 5.0.5
 
 ### Changed
@@ -39,7 +47,6 @@ This project uses [Semantic Versioning 2.0.0](https://semver.org/).
 ### Changed
 
 - Minimum Ruby version is 2.6
-
 - Updated definitions.
 
 

README.md

@@ -16,7 +16,7 @@
 
 ## Requirements
 
-<tt>PublicSuffix</tt> requires **Ruby >= 2.6**. For an older versions of Ruby use a previous release.
+<tt>PublicSuffix</tt> requires **Ruby >= 3.0**. For an older versions of Ruby use a previous release.
 
 
 ## Installation
@@ -33,8 +33,6 @@ Or use Bundler and define it as a dependency in your `Gemfile`:
 gem 'public_suffix'
 ```
 
-If you are upgrading to 2.0, see [2.0-Upgrade.md](2.0-Upgrade.md).
-
 ## Usage
 
 Extract the domain out from a name:

public_suffix.gemspec

@@ -12,7 +12,7 @@ Gem::Specification.new do |s|
   s.description = "PublicSuffix can parse and decompose a domain name into top level domain, domain and subdomains."
   s.homepage = "https://simonecarletti.com/code/publicsuffix-ruby"
   s.licenses = ["MIT"]
-  s.required_ruby_version = ">= 2.6"
+  s.required_ruby_version = ">= 3.0"
 
   s.metadata = {
     "bug_tracker_uri" => "https://github.com/weppos/publicsuffix-ruby/issues",