package.json: bump xpm 0.20.5

Author: ilg-ul

build-assets/package.json

@@ -11,7 +11,7 @@
     "liquidjs": "^10.20.1"
   },
   "xpack": {
-    "minimumXpmRequired": "0.16.3",
+    "minimumXpmRequired": "0.20.5",
     "devDependencies": {
       "@xpack-dev-tools/xbb-helper": "^3.1.8"
     },