Add Ruby 3.2

Author: petergoldstein

.github/workflows/ruby.yml

@@ -19,12 +19,12 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['2.6', '2.7', '3.0', '3.1']
+        ruby-version: ['2.6', '2.7', '3.0', '3.1', '3.2']
         mongodb-version: ['4.4']
         sqlite-version: ['3.0']
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Ruby
     # To automatically get bug fixes and new Ruby versions for ruby/setup-ruby,
     # change this to (see https://github.com/ruby/setup-ruby#versioning):