run tests on Ruby 3.4

Author: jkraemer

.github/workflows/run_tests.yml

@@ -13,7 +13,7 @@ jobs:
 
     strategy:
       matrix:
-        ruby-version: ['3.3', '3.1', '2.7']
+        ruby-version: ['3.4', '3.3', '3.1', '2.7']
 
     steps:
       - uses: actions/checkout@v3