fix: supplied test pks for external l1 args test

Author: zapper-95

.github/tests/external-l1/optimism.yaml

@@ -1,7 +1,18 @@
+optimism_package:
+  chains:
+    - batcher_params:
+        private_key: "e7848b12992369c383cfbff59633aeb305dbbd7a2c2ca19e60cc514dd953aefa"
+      challenger_params:
+        private_key: "e7848b12992369c383cfbff59633aeb305dbbd7a2c2ca19e60cc514dd953aefb"
+        enabled: true
+      sequencer_params:
+        private_key: "e7848b12992369c383cfbff59633aeb305dbbd7a2c2ca19e60cc514dd953aefc"     
+      proposer_params:
+        private_key: "e7848b12992369c383cfbff59633aeb305dbbd7a2c2ca19e60cc514dd953aefd"
 external_l1_network_params:
   network_id: "3151908"
   rpc_kind: standard
   el_rpc_url: http://el-1-geth-teku:8545 
   el_ws_url: ws://el-1-geth-teku:8546 
   cl_rpc_url: http://cl-1-teku-geth:4000 
-  priv_key: "0xbcdf20249abf0ed6d944c0288fad489e33f66b3960d9e6229c1cd214ed3bbe31"
+  priv_key: "0xbcdf20249abf0ed6d944c0288fad489e33f66b3960d9e6229c1cd214ed3bbe31"