CHANGELOG.md: add note about PostgreSQL 12

I migrated my production systems to PostgreSQL 12 months ago.

.drone.yml

@@ -4,7 +4,7 @@ name: python310
 
 steps:
 - name: setup
-  image: postgres:10-alpine
+  image: postgres:12-alpine
   environment:
     PGPASSWORD: postgres
   commands:
@@ -30,7 +30,7 @@ steps:
 
 services:
 - name: database
-  image: postgres:10-alpine
+  image: postgres:12-alpine
   environment:
     POSTGRES_USER: postgres
     POSTGRES_PASSWORD: postgres
@@ -43,7 +43,7 @@ name: python39
 
 steps:
 - name: setup
-  image: postgres:10-alpine
+  image: postgres:12-alpine
   environment:
     PGPASSWORD: postgres
   commands:
@@ -69,7 +69,7 @@ steps:
 
 services:
 - name: database
-  image: postgres:10-alpine
+  image: postgres:12-alpine
   environment:
     POSTGRES_USER: postgres
     POSTGRES_PASSWORD: postgres
@@ -82,7 +82,7 @@ name: python38
 
 steps:
 - name: database
-  image: postgres:10-alpine
+  image: postgres:12-alpine
   detach: true
   environment:
     POSTGRES_USER: postgres
@@ -90,7 +90,7 @@ steps:
     POSTGRES_DB: dspacestatistics
 
 - name: setup
-  image: postgres:10-alpine
+  image: postgres:12-alpine
   environment:
     PGPASSWORD: postgres
   commands:
@@ -121,7 +121,7 @@ name: python37
 
 steps:
 - name: database
-  image: postgres:10-alpine
+  image: postgres:12-alpine
   detach: true
   environment:
     POSTGRES_USER: postgres
@@ -129,7 +129,7 @@ steps:
     POSTGRES_DB: dspacestatistics
 
 - name: setup
-  image: postgres:10-alpine
+  image: postgres:12-alpine
   environment:
     PGPASSWORD: postgres
   commands:

.github/workflows/python-app.yml

@@ -12,7 +12,7 @@ jobs:
 
     services:
       database:
-        image: postgres:10-alpine
+        image: postgres:12-alpine
         env:
           # password for postgres user in the Docker container
           POSTGRES_PASSWORD: postgres

CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## Unreleased
 ### Changed
 - Update recommended Python version to 3.7+
+- Use PostgreSQL 12 in CI
 
 ## 1.4.3 - 2022-03-26
 ### Updated