chore(deps): update actions/setup-java action to v6

Author: renovate[bot]

.github/workflows/kotlin.yml

@@ -6,7 +6,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: actions/setup-java@v4
+      - uses: actions/setup-java@v6
         with:
           distribution: 'temurin'
           java-version: 17