Merge pull request 'Update renovate.json' (#13) from sixsmith/taiga:sixsmith-patch-1 into main

Reviewed-on: #13

compose.yml

@@ -2,7 +2,7 @@ version: "3.8"
 
 services: 
   db:
-    image: postgres:18.4
+    image: postgres:12.3
     deploy:
       labels:
         backupbot.backup: "${ENABLE_BACKUPS:-true}"

renovate.json

@@ -2,5 +2,13 @@
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": [
     "config:recommended"
+  ],
+  "packageRules": [
+    {
+      "matchDatasources": [
+        "docker"
+      ],
+      "pinDigests": true
+    }
   ]
 }