Update CI

Author: backpaper0

.github/workflows/ci.yml

@@ -47,7 +47,7 @@ jobs:
     strategy:
       matrix:
         java: [ 21, 22 ]
-        spring-boot-version: [ 3.2.9, 3.3.3, 3.4.0-M2 ]
+        spring-boot-version: [ 3.3.6, 3.4.0 ]
 
     steps:
       - uses: actions/checkout@v4