OWNERS: adjust maintainers

The maintainer has been unresponsive on this repository since
at least June 16th, 2022.  Adriana and I have done the majority
of the contributions and reviews in the last 2 years.  Vishwa
has stopped working on the project.

Changes:
  - Add Adriana as 'owner'.
  - Add Patrick as 'owner'.
  - Remove Vishwa as 'reviewer'.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I39a25bbfbd25d9fee98c5747961899fb0f395a17
diff --git a/OWNERS b/OWNERS
index 9dac168..e43dbab 100644
--- a/OWNERS
+++ b/OWNERS
@@ -32,11 +32,11 @@
 # data within them will be kept sorted.
 
 owners:
+- anoo@us.ibm.com
 - deepak.kodihalli.83@gmail.com
+- patrick@stwcx.xyz
 
 reviewers:
-- anoo@us.ibm.com
-- vishwa@linux.vnet.ibm.com
 
 matchers:
 
@@ -47,6 +47,6 @@
 - name: Deepak Kodihalli
   email: deepak.kodihalli.83@gmail.com
   discord: dkodihal
-- name: Vishwanatha Subbanna
-  email: vishwa@linux.vnet.ibm.com
-  discord: vishwa
+- name: Patrick Williams
+  email: patrick@stwcx.xyz
+  discord: stwcx