use jdk 21 in CI builds

Author: baltzell

.github/workflows/deploy.yml

@@ -16,10 +16,10 @@ jobs:
       - name: Checkout source code
         uses: actions/checkout@v2
 
-      - name: Set up JDK 1.8
+      - name: Set up JDK 21
         uses: actions/setup-java@v1
         with:
-          java-version: 1.8
+          java-version: 21
 
       - name: Deploy Snapshots with Maven
         run: mvn -B deploy -s .maven_settings.xml -DretryFailedDeploymentCount=10

.github/workflows/release.yml

@@ -103,10 +103,10 @@ jobs:
         with:
           ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
 
-      - name: Set up JDK 1.8
+      - name: Set up JDK 21
         uses: actions/setup-java@v1
         with:
-          java-version: 1.8
+          java-version: 21
 
       - name: Get email
         id: get_email

.github/workflows/site.yml

@@ -38,10 +38,10 @@ jobs:
         with:
           ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
 
-      - name: Set up JDK 1.8
+      - name: Set up JDK 21
         uses: actions/setup-java@v1
         with:
-          java-version: 1.8
+          java-version: 21
 
       - name: Get email
         id: get_email

.github/workflows/test.yml

@@ -12,10 +12,10 @@ jobs:
       - name: Checkout source code
         uses: actions/checkout@v3
 
-      - name: Set up JDK 1.8
+      - name: Set up JDK 21
         uses: actions/setup-java@v1
         with:
-          java-version: 1.8
+          java-version: 21
 
       - name: Build and run tests
         run: |