Incrementing the minor version to reflect upcoming v2.3 release

Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
Change-Id: Iac2f428490066bf7629f45c781d145298ec50524
diff --git a/Makefile b/Makefile
index dc6092f..f5f1c3f 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@
 
 # TFTF Version
 VERSION_MAJOR		:= 2
-VERSION_MINOR		:= 2
+VERSION_MINOR		:= 3
 
 ################################################################################
 # Default values for build configurations, and their dependencies