Drop end of life rubies and rails and add new versions

Ensure we're testing and supporting community supported versions.

Drop:
* ruby 2.7
* ruby 3.0
* rails 6.0
* rails 6.1

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

.github/workflows/ci.yaml

@@ -12,13 +12,13 @@ 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"
+  when "7.2"
+    "~>7.2.1"
+  when "7.1"
+    "~>7.1.4"
+  else "7.0"
     "~>7.0.8"
-  else
-    "~>6.1.4"
   end
 
 gem "activesupport", minimum_version