Add Siddhesh in approvers list (#705)

Signed-off-by: Siddhesh Ghadi <sghadi1203@gmail.com>
Co-authored-by: William Tam <wtam@redhat.com>

Author: svghadi

OWNERS

@@ -12,6 +12,7 @@ approvers:
 - rnapoles-rh
 - jaideepr97
 - varshab1210
+- svghadi
 
 reviewers:
 - sbose78