Update Ruby version for C parser test

Author: rmosolgo

.github/workflows/ci.yaml

@@ -100,7 +100,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 2.7
+        ruby-version: 3.0
         bundler-cache: true
     - run: bundle exec rake compile test
   mongodb_test: