Drop Ruby 2.7 support

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ jobs:
       fail-fast: false
       matrix:
         # Due to https://github.com/actions/runner/issues/849, we have to use quotes for '3.0'
-        ruby: [2.7, '3.0', 3.1, 3.2]
+        ruby: ['3.0', 3.1, 3.2]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3

.ruby-version

@@ -1 +1 @@
-2.7.6
+3.0.5

CHANGELOG.md

@@ -7,6 +7,10 @@
   useful summary for people upgrading their application, not a replication
   of the commit log.
 
+## Unreleased
+
+* Drop support for Ruby 2.7.
+
 ## 3.0.1
 
 * Resolve Selenium deprecation warning on options argument by requiring higher minimum versions ([#44](https://github.com/alphagov/govuk_test/pull/44))

govuk_test.gemspec

@@ -12,6 +12,7 @@ Gem::Specification.new do |spec|
   spec.description   = %q{Test configuration and dependencies for applications on GOV.UK}
   spec.homepage      = "https://github.com/alphagov/govuk_test"
   spec.license       = "MIT"
+  spec.required_ruby_version = ">= 3.0"
 
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.