Use Java 17 in deploy reference workflow

Issue gh-1945

Author: eleftherias

.github/workflows/deploy-reference.yml

@@ -13,10 +13,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - name: Set up JDK 11
+      - name: Set up JDK 17
         uses: actions/setup-java@v2
         with:
-          java-version: '11'
+          java-version: '17'
           distribution: 'adopt'
           cache: gradle
       - name: Validate Gradle wrapper