fix(contracts-bedrock): SystemConfig base fee require message contradicts <= check

## Problem

`_setResourceConfig` requires `minimumBaseFee <= maximumBaseFee`, but the revert string says the minimum must be **less than** the maximum, which is wrong when the two are equal.

## Expected

Message should say **less than or equal to** max base fee.

## PR

Tracked in the linked pull request.

Start by locating _setResourceConfig in the contracts-bedrock sources and inspect the revert string for the minimumBaseFee <= maximumBaseFee check. Done means the message accurately says that the minimum base fee may be less than or equal to the maximum base fee.

Written by the indexing model from the issue text.