Add mprahl to the OWNERS file

Signed-off-by: mprahl <[email protected]>

Author: mprahl

OWNERS

@@ -6,6 +6,7 @@ approvers:
   - gregsheremeta
   - HumairAK
   - rimolive
+  - mprahl
 reviewers:
   - DharmitD
   - gmfrasca
@@ -14,6 +15,7 @@ reviewers:
   - HumairAK
   - rimolive
   - VaniHaripriya
+  - mprahl
 emeritus_approvers:
   - accorvin
   - harshad16