Update maven-publish.yml

Author: shantek

.github/workflows/maven-publish.yml

@@ -8,11 +8,11 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - name: Set up JDK 11
+    - name: Set up JDK 16
       uses: actions/setup-java@v2
       with:
         distribution: adopt
-        java-version: 11
+        java-version: 16
 
     - name: Set up Maven
       uses: stCarolas/setup-maven@v4.2