deps: Use JDK 25 (LTS)

https://www.keycloak.org/server/supported-configurations

> To benefit from the latest performance improvements, we suggest using the latest supported JDK version for production deployments. This is currently OpenJDK 25.

Author: hangy

.github/workflows/codeql.yml

@@ -44,10 +44,10 @@ jobs:
         with:
           envFile: '.env'
 
-      - name: Set up JDK 21
+      - name: Set up JDK 25
         uses: actions/setup-java@v5.6.0
         with:
-          java-version: "21"
+          java-version: "25"
           distribution: "temurin"
           cache: maven
 

.github/workflows/maven.yml

@@ -17,10 +17,10 @@ jobs:
         with:
           envFile: '.env'
 
-      - name: Set up JDK 21
+      - name: Set up JDK 215
         uses: actions/setup-java@v5.6.0
         with:
-          java-version: "21"
+          java-version: "25"
           distribution: "temurin"
           cache: maven
 

Dockerfile

@@ -1,6 +1,6 @@
 # syntax = docker/dockerfile:1.2
 
-FROM maven:3-eclipse-temurin-21 AS builder
+FROM maven:3-eclipse-temurin-25 AS builder
 # build a custom extensions for keycloak using maven
 
 WORKDIR /build

src/README.md

@@ -25,10 +25,10 @@ This is emitted when a user deletes their account. Product Opener uses this even
 A JDK is required along with Maven. The versions should match the builder image used in the `Dockerfile`, e.g.
 
 ```Dockerfile
-FROM maven:3-eclipse-temurin-21 AS builder
+FROM maven:3-eclipse-temurin-25 AS builder
 ```
 
-Uses Maven version 3 with version 21 of the JDK.
+Uses Maven version 3 with version 25 of the JDK.
 
 Note that if the `keycloak.version` property is changed you will need to run `make update_keycloak_version` to update the other version numbers in the `pom.xml` file and refresh themes and messages.