test: update asset gas limit

Signed-off-by: Gregory Edison <gregory.edison1993@gmail.com>

Author: greged93

crates/scroll/node/tests/assets/genesis.json

@@ -23,7 +23,7 @@
     "nonce": "0x0",
     "timestamp": "0x0",
     "extraData": "0x00",
-    "gasLimit": "0x1c9c380",
+    "gasLimit": "0x1312d00",
     "difficulty": "0x0",
     "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
     "coinbase": "0x0000000000000000000000000000000000000000",
@@ -105,4 +105,4 @@
         }
     },
     "number": "0x0"
-}
+}