chore: bump version up

application.fam

@@ -13,6 +13,6 @@ App(
     order=20,
     fap_author="@besya",
     fap_weburl="https://github.com/besya/flipperzero-tuning-fork",
-    fap_version="1.3",
+    fap_version="2.0",
     fap_description="Tuning fork for tuning musical instruments",
 )