GRN2-354: Switch default database to Postgres 13.2 (#2563)

* Switch default database to Postgres 13.2

* Update pg version in Github Actions

.github/workflows/main.yml

@@ -21,7 +21,7 @@ jobs:
 
     services:
       postgres:
-        image: postgres
+        image: postgres:13.2-alpine
         env:
           POSTGRES_DB: postgres
           POSTGRES_PASSWORD: postgres

docker-compose.yml

@@ -24,7 +24,7 @@ services:
     links:
       - db
   db:
-    image: postgres:9.5
+    image: postgres:13.2-alpine
     restart: unless-stopped
     ports:
       - 127.0.0.1:5432:5432