chore: revert version change for self hosted

Author: darkskygit

.docker/selfhost/.env.example

@@ -17,8 +17,6 @@ UPLOAD_LOCATION=~/.affine/self-host/storage
 # position of the configuration files to persist
 CONFIG_LOCATION=~/.affine/self-host/config
 
-# postgres major version
-DB_VERSION=16
 # database credentials
 DB_USERNAME=affine
 DB_PASSWORD=

.docker/selfhost/compose.yml

@@ -53,7 +53,7 @@ services:
     restart: unless-stopped
 
   postgres:
-    image: postgres:${DB_VERSION:-16}
+    image: postgres:16
     container_name: postgres
     volumes:
       - ${DB_DATA_LOCATION}:/var/lib/postgresql/data

.github/deployment/self-host/compose.yaml

@@ -43,7 +43,7 @@ services:
       timeout: 5s
       retries: 5
   postgres:
-    image: postgres:${DB_VERSION:-16}
+    image: postgres:16
     container_name: affine_postgres
     restart: unless-stopped
     volumes: