bin2ota: fix magic number

Author: pennam

extras/tools/bin2ota.py

@@ -27,7 +27,7 @@
 elif board == "NANO_RP2040_CONNECT":
     magic_number = 0x2341005E.to_bytes(4,byteorder='little')
 elif board == "ESP32":
-    magic_number = 0x00000000.to_bytes(4,byteorder='little')
+    magic_number = 0x45535033.to_bytes(4,byteorder='little')
 else:
     print ("Error,", board, "is not a supported board type")
     sys.exit()