Bug Description
After the holesky hard fork our batcher that uses a custom DA (so only posts a few bytes per tx) started getting this error:

t=2025-02-24T23:18:31+0000 lvl=warn msg="Failed to create a transaction, will retry" service=batcher err="failed to call: err: insufficient gas for floor data gas cost: have 21592, want 22480 (supplied gas 21592), reason: <nil>"

Steps to Reproduce
Try to send a batcher tx with 37 bytes as data

Expected behavior
Transaction is created properly
Environment Information:
Fraxtal op-batcher based on v1.11.1

Additional context

I've copied the go-ethereum FloorDataGas function and used that as a min gaslimit when sending the tx and the issue was resolved