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

Updated the Java version from 21 to 25 in the CI configuration files
to ensure compatibility with the latest features and improvements.

- Updated fuzz-tests.yml
- Updated ci.yml
- Updated nightly.yml

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