fix: bump versionCode to 6 for APK upgrade compatibility

Previous preview build (v1.2.5) used versionCode 5 via production
autoIncrement, but app.json was still at 4. Android refuses to install
an APK with a lower versionCode than the currently installed one.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app.json

@@ -2,7 +2,7 @@
   "expo": {
     "name": "Simpl-Liste",
     "slug": "simpl-liste",
-    "version": "1.2.5",
+    "version": "1.3.0",
     "orientation": "portrait",
     "icon": "./assets/images/icon.png",
     "scheme": "simplliste",
@@ -24,7 +24,7 @@
         "backgroundColor": "#FFF8F0"
       },
       "edgeToEdgeEnabled": true,
-      "versionCode": 4
+      "versionCode": 6
     },
     "plugins": [
       "expo-router",

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "simpl-liste",
-  "version": "1.2.4",
+  "version": "1.3.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "simpl-liste",
-      "version": "1.2.4",
+      "version": "1.3.0",
       "dependencies": {
         "@expo-google-fonts/inter": "^0.4.2",
         "@expo/ngrok": "^4.1.3",

package.json

@@ -1,7 +1,7 @@
 {
   "name": "simpl-liste",
   "main": "index.js",
-  "version": "1.2.5",
+  "version": "1.3.0",
   "scripts": {
     "start": "expo start",
     "android": "expo start --android",