Merge pull request 'Update Java language version to 23' (!46) from task/CAS-0/UpdateJavaVersion into main

Reviewed-on: https://git.simonis.lol/projects/casino/pulls/46
Reviewed-by: Constantin Simonis <constantin@simonis.lol>

.gitea/workflows/ci.yml

@@ -8,15 +8,15 @@ jobs:
     name: "Checkstyle Main"
     runs-on: "vps-4"
     container:
-      image: "cimg/openjdk:22.0-node"
+      image: "cimg/openjdk:23.0-node"
     steps:
       - name: "Checkout"
         uses: actions/checkout@v3
-      - name: Setup Java 22
+      - name: Setup Java 23
         uses: actions/setup-java@v3
         with:
           distribution: "temurin"
-          java-version: "22"
+          java-version: "23"
       - name: "Cache Gradle dependencies"
         uses: actions/cache@v3
         with:

backend/build.gradle.kts

@@ -24,7 +24,7 @@ version = "0.0.1-SNAPSHOT"
 
 java {
     toolchain {
-        languageVersion = JavaLanguageVersion.of(22)
+        languageVersion = JavaLanguageVersion.of(23)
     }
 }