chore(deps): update postgres docker digest to 7848165 (micasa-dev#975)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| postgres | digest | `059fa02` → `7848165` |

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deploy/docker-compose.yml

@@ -3,7 +3,7 @@
 
 services:
   postgres:
-    image: postgres@sha256:059fa0289cc5a184034e05a1f4f6d6fd79f69dc718b8b04ab60b6b469eed411e # 17-alpine
+    image: postgres@sha256:78481659c47e862334611ccdaf7c369c986b3046da9857112f3b309114a65fb4 # 17-alpine
     environment:
       POSTGRES_USER: micasa
       POSTGRES_DB: micasa