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

docker-compose.yml

@@ -19,7 +19,7 @@ services:
       - matrix
 
   db:
-    image: docker.io/postgres:17.2-alpine@sha256:d37d2c160d34430877c802e5adc22824a2ad453499db9bab1a2ceb2be6c1a46f
+    image: docker.io/postgres:17.2-alpine@sha256:7691da1fee373a0d2c7f661521e17d51947e2a1b6e2d7e25ea3be18108348397
     restart: unless-stopped
     environment:
       - POSTGRES_USER=${DC_MATRIX_POSTGRES_USER:-synapse}