chore(release): bump versionCode to 35 for v2.5.1 re-upload

Version code 34 was consumed by a failed GitHub Actions deploy run
(r0adkll/upload-google-play committed the Play Store edit before the
userFraction validation error aborted the workflow). The app content
is identical to v2.5.1; only the internal Play Store version code
is incremented to unblock the production release upload.

Author: inventory69

android/app/build.gradle.kts

@@ -20,7 +20,7 @@ android {
         applicationId = "dev.dettmer.simplenotes"
         minSdk = 24
         targetSdk = 36
-        versionCode = 34  // 🆕 v2.5.1 - Note colour sorting
+        versionCode = 35  // 🆕 v2.5.1 - Note colour sorting (code 34 consumed by failed API upload)
         versionName = "2.5.1"  // 🆕 v2.5.1 - Note colour sorting
 
         // APK-Size: nur tatsächlich gepflegte Locales ausliefern. AndroidX/Material/