Upgrade CI to test newer versions of postgres

Author: bjester

.github/workflows/morango_integration.yml

@@ -102,7 +102,7 @@ jobs:
       # Label used to access the service container
       postgres:
         # Docker Hub image
-        image: postgres:12
+        image: postgres:16
         # Provide the password for postgres
         env:
           POSTGRES_USER: postgres

.github/workflows/postgres.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       max-parallel: 5
       matrix:
-        postgres-version: [9, 10, 11, 12, 13]
+        postgres-version: [12, 13, 14, 15, 16]
     services:
       # Label used to access the service container
       postgres:

.github/workflows/tox.yml

@@ -95,7 +95,7 @@ jobs:
       # Label used to access the service container
       postgres:
         # Docker Hub image
-        image: postgres:12
+        image: postgres:16
         # Provide the password for postgres
         env:
           POSTGRES_USER: postgres
@@ -137,7 +137,7 @@ jobs:
     runs-on: ubuntu-latest
     services:
       postgres:
-        image: postgres:12
+        image: postgres:16
         env:
           POSTGRES_USER: postgres
           POSTGRES_PASSWORD: postgres