ci: Bump ruby to 3.1

Author: ctlong

.github/workflows/scripts.yml

@@ -26,7 +26,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '2.7'
+          ruby-version: '3.1'
           bundler-cache: true
       - run: ./scripts/subtests/spec-test