update deployment

Author: mfrawley-moia

.github/workflows/moia-deploy-on-pr-merge.yaml

@@ -16,10 +16,10 @@ jobs:
     environment: prd
     steps:
       - uses: actions/checkout@v3
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@v3
         with:
-          java-version: 17
+          java-version: 21
           distribution: 'zulu'
       - name: Set version
         run:  mvn versions:set -DnewVersion=moia-latest-SNAPSHOT