Update version compatibility

Author: bshand

.github/workflows/test.yml

@@ -18,6 +18,10 @@ jobs:
           - gemfiles/Gemfile.rails72
           - gemfiles/Gemfile.rails80
         exclude:
+          # rails 7.2 requires ruby >= 3.1
+          # https://www.fastruby.io/blog/ruby/rails/versions/compatibility-table.html
+          - ruby-version: '3.0'
+            gemfile: 'gemfiles/Gemfile.rails72'
           # rails 8.0 requires ruby >= 3.2
           # https://www.fastruby.io/blog/ruby/rails/versions/compatibility-table.html
           - ruby-version: '3.0'