fix(DX): Check Frappe and ERPNext major versions (#35651)

diff --git a/erpnext/__init__.py b/erpnext/__init__.py
index c9c9c9c..3e418c4 100644
--- a/erpnext/__init__.py
+++ b/erpnext/__init__.py
@@ -3,7 +3,7 @@
 
 import frappe
 
-__version__ = "14.0.0-dev"
+__version__ = "15.0.0-dev"
 
 
 def get_default_company(user=None):