fix(op-base): update DynamicBaseFee params after SystemConfig update (#1241)

Author: anaPerezGhiglia

.changeset/angry-pigs-film.md

@@ -0,0 +1,5 @@
+---
+"@nomicfoundation/edr": patch
+---
+
+Updated base mainnet eip1559 parameters after SystemConfig update on 2025-12-18

crates/edr_op/src/hardfork/base.rs

@@ -37,6 +37,10 @@ pub(crate) static MAINNET_BASE_FEE_PARAMS: LazyLock<BaseFeeParams<OpSpecId>> =
                 BaseFeeActivation::BlockNumber(38_088_319),
                 ConstantBaseFeeParams::new(50, 5),
             ),
+            (
+                BaseFeeActivation::BlockNumber(39_647_879),
+                ConstantBaseFeeParams::new(50, 6),
+            ),
         ]))
     });
 

crates/edr_op/tests/integration/dynamic_base_fee_params.rs

@@ -75,6 +75,7 @@ impl_test_dynamic_base_fee_params! {
         37_483_302,
         38_088_319,
         38_951_425, // jovian activated block
+        39_647_879, // SystemConfig EIP-1559 update 2025-12-18
     ],
     op_sepolia: op::sepolia_url() => [
         26_806_602,