test(ci): flake-group new e2e_slashing tests to unblock merge-train/spartan

Author: AztecBot

.test_patterns.yml

@@ -291,6 +291,11 @@ tests:
     owners:
       - *palla
 
+  - regex: "src/e2e_slashing/.*\\.test\\.ts"
+    flake_group_id: e2e-p2p-epoch-flakes
+    owners:
+      - *alex
+
   - regex: "p2p/src/client/test/.*\\.test\\.ts"
     flake_group_id: e2e-p2p-epoch-flakes
     owners: