chore: Update GitHub workflows to use Java 21 instead of Java 17

Author: hzpz

.github/workflows/build-feature.yml

@@ -35,7 +35,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           distribution: 'temurin'
-          java-version: '17'
+          java-version: '21'
           cache: 'maven'
           cache-dependency-path: '**/pom.xml'
 

.github/workflows/build-main.yml

@@ -22,7 +22,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           distribution: 'temurin'
-          java-version: '17'
+          java-version: '21'
           cache: 'maven'
           cache-dependency-path: '**/pom.xml'
 
@@ -61,7 +61,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           distribution: 'temurin'
-          java-version: '17'
+          java-version: '21'
           cache: 'maven'
           cache-dependency-path: '**/pom.xml'
 

.github/workflows/deploy-documentation.yml

@@ -29,7 +29,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           distribution: 'temurin'
-          java-version: '17'
+          java-version: '21'
           cache: 'maven'
           cache-dependency-path: '**/pom.xml'
 

.github/workflows/release-to-maven-central.yml

@@ -40,7 +40,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           distribution: 'temurin'
-          java-version: '17'
+          java-version: '21'
           server-id: central
           server-username: MAVEN_USERNAME
           server-password: MAVEN_PASSWORD