updated preset values from upstream (#10093)

Author: rolfyone

ethereum/spec/src/main/resources/tech/pegasys/teku/spec/config/presets/gnosis/electra.yaml

@@ -41,8 +41,8 @@ MAX_WITHDRAWAL_REQUESTS_PER_PAYLOAD: 16
 
 # Withdrawals processing
 # ---------------------------------------------------------------
-# 2**3 ( = 8) pending withdrawals
-MAX_PENDING_PARTIALS_PER_WITHDRAWALS_SWEEP: 8
+# 6 pending withdrawals
+MAX_PENDING_PARTIALS_PER_WITHDRAWALS_SWEEP: 6
 
 # Pending deposits processing
 # ---------------------------------------------------------------