Add pierDipi and bartoszmajsak to OWNERS (#638)

Signed-off-by: Pierangelo Di Pilato <[email protected]>
Co-authored-by: Pierangelo Di Pilato <[email protected]>

Author: openshift-cherrypick-robot

OWNERS

@@ -1,24 +1,28 @@
 approvers:
   - andresllh
+  - bartoszmajsak
   - brettmthompson
   - danielezonca
   - hdefazio
   - israel-hdez
   - Jooho
   - mholder6
   - mwaykole
+  - pierDipi
   - rnetser
   - spolti
   - terrytangyuan
   - VedantMahabaleshwarkar
 reviewers:
   - andresllh
+  - bartoszmajsak
   - brettmthompson
   - hdefazio
   - israel-hdez
   - Jooho
   - mholder6
   - mwaykole
+  - pierDipi
   - rnetser
   - spolti
   - terrytangyuan