CI: build with jdk 21

Author: sstone

.github/workflows/release.yml

@@ -29,10 +29,10 @@ jobs:
           path: ~/.gradle
           key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*') }}-${{ hashFiles('**/gradle/wrapper/gradle-wrapper.properties') }}
           restore-keys: ${{ runner.os }}-gradle-
-      - name: Set up JDK 11
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
-          java-version: 11
+          java-version: 21
           distribution: 'adopt'
       - name: Check
         run: ./gradlew check

.github/workflows/snapshot.yml

@@ -37,10 +37,10 @@ jobs:
           path: ~/.gradle
           key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*') }}-${{ hashFiles('**/gradle/wrapper/gradle-wrapper.properties') }}
           restore-keys: ${{ runner.os }}-gradle-
-      - name: Set up JDK 11
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
-          java-version: 11
+          java-version: 21
           distribution: 'adopt'
       - name: Check
         run: ./gradlew check

.github/workflows/test.yml

@@ -44,10 +44,10 @@ jobs:
           path: ~/.gradle
           key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*') }}-${{ hashFiles('**/gradle/wrapper/gradle-wrapper.properties') }}
           restore-keys: ${{ runner.os }}-gradle-
-      - name: Set up JDK 11
+      - name: Set up JDK 21
         uses: actions/setup-java@v2
         with:
-          java-version: 11
+          java-version: 21
           distribution: 'adopt'
       - name: Check
         run: ./gradlew check