[VOL-5245] -- release patch

VERSION
go.mod
go.sum
vendor/modules.txt
------------------
  o Update release branch version of voltha-protos to v5.4.11
  o make mod-update regenerated go.sum and vendor/modules.txt

Change-Id: If1272caafec5a80810c5f63b3afcaa9e9d112e32
diff --git a/VERSION b/VERSION
index 3488e29..017f800 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-7.5.2
+7.5.3