Update Version to 1.4.0

Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
Change-Id: Iea5b7126f7c92b6a3b926e65a8fc828f7221ca83
diff --git a/tfm_ci_pylib/tfm_builder.py b/tfm_ci_pylib/tfm_builder.py
index 7ba9846..9ca6c59 100644
--- a/tfm_ci_pylib/tfm_builder.py
+++ b/tfm_ci_pylib/tfm_builder.py
@@ -17,7 +17,7 @@
 
 __author__ = "tf-m@lists.trustedfirmware.org"
 __project__ = "Trusted Firmware-M Open CI"
-__version__ = "1.2.0"
+__version__ = "1.4.0"
 
 import os
 import re