Drop end of life rubies and rails and add new versions

Ensure we're testing and supporting community supported versions.

Drop:
* ruby 2.7
* rails 6.0
* rails 6.1

Add:
* ruby 3.2
* ruby 3.3
* rails 7.1
* rails 7.2

Note: ruby 3.0 is not difficult to keep maintaining for now but it's on the chopping block.

.github/workflows/ci.yaml

@@ -12,13 +12,14 @@ jobs:
     strategy:
       matrix:
         ruby-version:
-        - '2.7'
         - '3.0'
         - '3.1'
+        - '3.2'
+        - '3.3'
         rails-version:
-        - '6.0'
-        - '6.1'
         - '7.0'
+        - '7.1'
+        - '7.2'
     env:
       TEST_RAILS_VERSION: ${{ matrix.rails-version }}
       CC_TEST_REPORTER_ID: ${{ secrets.CC_TEST_REPORTER_ID }}

Gemfile

@@ -5,12 +5,12 @@ gemspec
 
 minimum_version =
   case ENV['TEST_RAILS_VERSION']
-  when "6.0"
-    "~>6.0.4"
-  when "7.0"
-    "~>7.0.8"
+  when "7.2"
+    "~>7.2.1"
+  when "7.1"
+    "~>7.1.4"
   else
-    "~>6.1.4"
+    "~>7.0.8"
   end
 
 gem "activesupport", minimum_version

manageiq-messaging.gemspec

@@ -6,7 +6,7 @@ require 'manageiq/messaging/version'
 Gem::Specification.new do |spec|
   spec.name                  = "manageiq-messaging"
   spec.version               = ManageIQ::Messaging::VERSION
-  spec.required_ruby_version = '>= 3.1'
+  spec.required_ruby_version = '>= 3.0'
   spec.authors               = ["ManageIQ Authors"]
 
   spec.summary       = 'Client library for ManageIQ components to exchange messages through its internal message bus.'