chore(deps): update docker.io/postgres docker tag to v17

docker-compose.yml

@@ -19,7 +19,7 @@ services:
       - matrix
 
   db:
-    image: docker.io/postgres:12.22-alpine@sha256:e6e3b83b505ada6e13d247c2231aa464995bb585183e11265f617f41d110d69b
+    image: docker.io/postgres:17.2-alpine@sha256:f58b02ec01778a7c590c3dcf869da3f4294d89adc70e6f55d63b0b8c6f78faa1
     restart: unless-stopped
     environment:
       - POSTGRES_USER=${DC_MATRIX_POSTGRES_USER:-synapse}