devops: test on java 21 which is latest lts (#1613)

.github/workflows/test.yml

@@ -88,7 +88,7 @@ jobs:
           BROWSER: chromium
           BROWSER_CHANNEL: ${{ matrix.browser-channel }}
 
-  Java_17:
+  Java_21:
     timeout-minutes: 30
     strategy:
       fail-fast: false
@@ -98,11 +98,11 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: microsoft/playwright-github-action@v1
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@v2
         with:
           distribution: adopt
-          java-version: 17
+          java-version: 21
       - name: Download drivers
         shell: bash
         run: scripts/download_driver.sh