tests, net, OWNERS: Add frenzyfriday

Add frenzyfriday as network test reviewer.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Signed-off-by: Ananya Banerjee <anbanerj@redhat.com>

Author: frenzyfriday

tests/network/OWNERS

@@ -7,3 +7,4 @@ reviewers:
   - EdDev
   - servolkov
   - azhivovk
+  - frenzyfriday