chore(ci): update Java version to 25 in CI configuration files (#734)

Author: alaahong

.github/workflows/ci.yml

@@ -52,7 +52,7 @@ jobs:
       - name: Set up JDK
         uses: actions/setup-java@v5
         with:
-          java-version: 21
+          java-version: 25
           distribution: 'temurin'
       - name: Check code style
         run: ./mvnw spotless:check
@@ -61,7 +61,7 @@ jobs:
     runs-on: ubuntu-24.04
     strategy:
       matrix:
-        java: [ 8, 11, 17, 21, 25-ea ]
+        java: [ 8, 11, 17, 21, 25 ]
         distribution: [ 'temurin' ]
       fail-fast: false
       max-parallel: 5

.github/workflows/fuzz-tests.yml

@@ -39,7 +39,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           distribution: 'temurin'
-          java-version: '21'
+          java-version: '25'
           cache: 'maven'
 
       - name: Run fuzz tests (fesod module)

.github/workflows/nightly.yml

@@ -29,7 +29,7 @@ jobs:
     runs-on: ubuntu-24.04
     strategy:
       matrix:
-        java: [ 8, 11, 17, 21, 25-ea ]
+        java: [ 8, 11, 17, 21, 25 ]
         distribution: [ 'temurin' ]
       fail-fast: false
       max-parallel: 5