bump alpine version for pg v14

.github/workflows/build-and-push-images.yml

@@ -15,7 +15,7 @@ jobs:
           - { postgres: 11, alpine: '3.10' }
           - { postgres: 12, alpine: '3.12' }
           - { postgres: 13, alpine: '3.14' }
-          - { postgres: 14, alpine: '3.15' }
+          - { postgres: 14, alpine: '3.16' }
 
     steps:
       - name: Checkout repository