Move to 2020.4

2020.4 contains a lot of new schemas.
New feature include: new power and thermal schemas, conditions,
and new account types.

For more information, see:
https://www.dmtf.org/sites/default/files/Redfish_Release_2020.4_Overview.pdf

Tested: Validator passes. Able to see new schemas.
Change-Id: I7fb860c84fa4cff80698dcb26a463b155e6faba7
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/scripts/update_schemas.py b/scripts/update_schemas.py
index 517fd92..43d563a 100755
--- a/scripts/update_schemas.py
+++ b/scripts/update_schemas.py
@@ -12,7 +12,7 @@
 
 import xml.etree.ElementTree as ET
 
-VERSION = "DSP8010_2020.3"
+VERSION = "DSP8010_2020.4"
 
 SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))