(PE-40707) use ruby 3.2

Author: davidmalloncares

.github/workflows/test-migration.yaml

@@ -57,10 +57,10 @@ jobs:
         uses: actions/checkout@v4
         with:
           ref: ${{ github.head_ref }}
-      - name: Activate Ruby 2.7
+      - name: Activate Ruby 3.2
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '2.7'
+          ruby-version: '3.2'
           bundler-cache: true
       - name: Print bundle environment
         if: ${{ github.repository_owner == 'puppetlabs' }}