Update ci.yml

Author: toshimaru

.github/workflows/ci.yml

@@ -55,7 +55,7 @@ jobs:
         include:
           - ruby-version: "2.7"
             build-rails-versions: "5.2,6.0,6.1"
-          - ruby-version: "3.0"
+          - ruby-version: "3.4"
             build-rails-versions: "7.0"
           - ruby-version: "3.3"
             build-rails-versions: "7.1,7.2"