Update Release VERSION in SConscript

Change-Id: Ifed2048b2554e55216152ff9487ee4182735f049
Signed-off-by: morgolock <pablo.tello@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4489
Reviewed-by: SiCong Li <sicong.li@arm.com>
Tested-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
diff --git a/SConscript b/SConscript
index 8bff84b..bc4aa4c 100644
--- a/SConscript
+++ b/SConscript
@@ -24,7 +24,7 @@
 import re
 import subprocess
 
-VERSION = "v0.0-unreleased"
+VERSION = "v20.11"
 LIBRARY_VERSION_MAJOR = 21
 LIBRARY_VERSION_MINOR =  0
 LIBRARY_VERSION_PATCH =  0