test ruby 3.4

Author: flyerhzm

.github/workflows/main.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['2.7', '3.0', '3.1', '3.2', '3.3']
+        ruby-version: ['2.7', '3.0', '3.1', '3.2', '3.3', '3.4']
 
     steps:
     - uses: actions/checkout@v2