fix: Snap publish regression (#8424)

Author: lutzroeder

.changeset/small-badgers-pull.md

@@ -0,0 +1,5 @@
+---
+"app-builder-lib": patch
+---
+
+fix: Snap publish regression in pulling publish config

packages/app-builder-lib/src/targets/snap.ts

@@ -273,6 +273,14 @@ function findSnapPublishConfig(config?: Configuration): SnapStoreOptions | null
     return null
   }
 
+  if (config.snap?.publish) {
+    const configCandidate = findSnapPublishConfigInPublishNode(config.snap.publish)
+
+    if (configCandidate) {
+      return configCandidate
+    }
+  }
+
   if (config.linux?.publish) {
     const configCandidate = findSnapPublishConfigInPublishNode(config.linux.publish)